885657381 has 32 divisors (see below), whose sum is σ = 1430887680. Its totient is φ = 475677696.

The previous prime is 885657371. The next prime is 885657391. The reversal of 885657381 is 183756588.

It is an interprime number because it is at equal distance from previous prime (885657371) and next prime (885657391).

It is not a de Polignac number, because 885657381 - 2¹⁰ = 885656357 is a prime.

It is a super-2 number, since 2×885657381² = 1568777993039558322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (885657371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 394795 + ... + 397031.

It is an arithmetic number, because the mean of its divisors is an integer number (44715240).

Almost surely, 2^885657381 is an apocalyptic number.

It is an amenable number.

885657381 is a deficient number, since it is larger than the sum of its proper divisors (545230299).

885657381 is a wasteful number, since it uses less digits than its factorization.

885657381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3373.

The product of its digits is 1612800, while the sum is 51.

The square root of 885657381 is about 29759.9963205643. The cubic root of 885657381 is about 960.3331385044. Note that the first 3 decimals are identical.

The spelling of 885657381 in words is "eight hundred eighty-five million, six hundred fifty-seven thousand, three hundred eighty-one".