472181986 has 8 divisors (see below), whose sum is σ = 712618704. Its totient is φ = 234642420.

The previous prime is 472181971. The next prime is 472182001. The reversal of 472181986 is 689181274.

It is an interprime number because it is at equal distance from previous prime (472181971) and next prime (472182001).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 723880 + ... + 724531.

It is an arithmetic number, because the mean of its divisors is an integer number (89077338).

Almost surely, 2^472181986 is an apocalyptic number.

472181986 is a deficient number, since it is larger than the sum of its proper divisors (240436718).

472181986 is a wasteful number, since it uses less digits than its factorization.

472181986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448576.

The product of its digits is 193536, while the sum is 46.

The square root of 472181986 is about 21729.7488710753. The cubic root of 472181986 is about 778.6993368204.

The spelling of 472181986 in words is "four hundred seventy-two million, one hundred eighty-one thousand, nine hundred eighty-six".