851866368 has 72 divisors (see below), whose sum is σ = 2386574400. Its totient is φ = 269005824.

The previous prime is 851866357. The next prime is 851866369. The reversal of 851866368 is 863668158.

It is a super-2 number, since 2×851866368² = 1451352617859022848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 851866368.

It is not an unprimeable number, because it can be changed into a prime (851866369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14598 + ... + 43781.

Almost surely, 2^851866368 is an apocalyptic number.

It is an amenable number.

851866368 is an abundant number, since it is smaller than the sum of its proper divisors (1534708032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

851866368 is a wasteful number, since it uses less digits than its factorization.

851866368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58417 (or 58403 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 851866368 is about 29186.7498704463. The cubic root of 851866368 is about 947.9610445279.

The spelling of 851866368 in words is "eight hundred fifty-one million, eight hundred sixty-six thousand, three hundred sixty-eight".