381853377 has 12 divisors (see below), whose sum is σ = 565019364. Its totient is φ = 248359680.

The previous prime is 381853309. The next prime is 381853399. The reversal of 381853377 is 773358183.

381853377 is a `hidden beast` number, since 38 + 18 + 533 + 77 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 181602576 + 200250801 = 13476^2 + 14151^2 .

It is not a de Polignac number, because 381853377 - 2⁷ = 381853249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381853777) 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, 517048 + ... + 517785.

It is an arithmetic number, because the mean of its divisors is an integer number (47084947).

Almost surely, 2^381853377 is an apocalyptic number.

It is an amenable number.

381853377 is a deficient number, since it is larger than the sum of its proper divisors (183165987).

381853377 is a wasteful number, since it uses less digits than its factorization.

381853377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034880 (or 1034877 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 381853377 is about 19541.0689830418. The cubic root of 381853377 is about 725.4913051942.

The spelling of 381853377 in words is "three hundred eighty-one million, eight hundred fifty-three thousand, three hundred seventy-seven".