2381189553 has 12 divisors (see below), whose sum is σ = 3452882628. Its totient is φ = 1581281280.

The previous prime is 2381189549. The next prime is 2381189557. The reversal of 2381189553 is 3559811832.

2381189553 is a `hidden beast` number, since 2 + 3 + 8 + 11 + 89 + 553 = 666.

2381189553 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2381189549) and next prime (2381189557).

It can be written as a sum of positive squares in 2 ways, for example, as 1569110544 + 812079009 = 39612^2 + 28497^2 .

It is not a de Polignac number, because 2381189553 - 2² = 2381189549 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2381189499 and 2381189508.

It is not an unprimeable number, because it can be changed into a prime (2381189557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 512428 + ... + 517053.

It is an arithmetic number, because the mean of its divisors is an integer number (287740219).

Almost surely, 2^2381189553 is an apocalyptic number.

It is an amenable number.

2381189553 is a deficient number, since it is larger than the sum of its proper divisors (1071693075).

2381189553 is a wasteful number, since it uses less digits than its factorization.

2381189553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029744 (or 1029741 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 2381189553 is about 48797.4338772030. The cubic root of 2381189553 is about 1335.3588514754.

The spelling of 2381189553 in words is "two billion, three hundred eighty-one million, one hundred eighty-nine thousand, five hundred fifty-three".