18954392810 has 32 divisors (see below), whose sum is σ = 34404048000. Its totient is φ = 7518340800.

The previous prime is 18954392803. The next prime is 18954392843. The reversal of 18954392810 is 1829345981.

It is a super-2 number, since 2×18954392810² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912035 + ... + 932585.

It is an arithmetic number, because the mean of its divisors is an integer number (1075126500).

Almost surely, 2^18954392810 is an apocalyptic number.

18954392810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18954392810 is a deficient number, since it is larger than the sum of its proper divisors (15449655190).

18954392810 is a wasteful number, since it uses less digits than its factorization.

18954392810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21326.

The product of its (nonzero) digits is 622080, while the sum is 50.

The spelling of 18954392810 in words is "eighteen billion, nine hundred fifty-four million, three hundred ninety-two thousand, eight hundred ten".