1813145528 has 16 divisors (see below), whose sum is σ = 3578577000. Its totient is φ = 858858336.

The previous prime is 1813145527. The next prime is 1813145549. The reversal of 1813145528 is 8255413181.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 1813145491 and 1813145500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813145527) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5964143 + ... + 5964446.

Almost surely, 2^1813145528 is an apocalyptic number.

It is an amenable number.

1813145528 is a deficient number, since it is larger than the sum of its proper divisors (1765431472).

1813145528 is a wasteful number, since it uses less digits than its factorization.

1813145528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11928614 (or 11928610 counting only the distinct ones).

The product of its digits is 38400, while the sum is 38.

The square root of 1813145528 is about 42581.0465817833. The cubic root of 1813145528 is about 1219.3944697261.

The spelling of 1813145528 in words is "one billion, eight hundred thirteen million, one hundred forty-five thousand, five hundred twenty-eight".