868904181 has 48 divisors (see below), whose sum is σ = 1368656640. Its totient is φ = 529390080.

The previous prime is 868904167. The next prime is 868904203. The reversal of 868904181 is 181409868.

It is not a de Polignac number, because 868904181 - 2⁵ = 868904149 is a prime.

It is a super-2 number, since 2×868904181² = 1509988951518561522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (868904161) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 585961 + ... + 587441.

It is an arithmetic number, because the mean of its divisors is an integer number (28513680).

Almost surely, 2^868904181 is an apocalyptic number.

It is an amenable number.

868904181 is a deficient number, since it is larger than the sum of its proper divisors (499752459).

868904181 is a wasteful number, since it uses less digits than its factorization.

868904181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626 (or 1623 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 868904181 is about 29477.1806826908. The cubic root of 868904181 is about 954.2392929784.

The spelling of 868904181 in words is "eight hundred sixty-eight million, nine hundred four thousand, one hundred eighty-one".