16929874820 has 24 divisors (see below), whose sum is σ = 35749168728. Its totient is φ = 6734534400.

The previous prime is 16929874807. The next prime is 16929874867. The reversal of 16929874820 is 2847892961.

It can be written as a sum of positive squares in 4 ways, for example, as 1807270144 + 15122604676 = 42512^2 + 122974^2 .

It is a super-2 number, since 2×16929874820² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2334761 + ... + 2342000.

It is an arithmetic number, because the mean of its divisors is an integer number (1489548697).

Almost surely, 2^16929874820 is an apocalyptic number.

16929874820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16929874820 is an abundant number, since it is smaller than the sum of its proper divisors (18819293908).

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

16929874820 is a wasteful number, since it uses less digits than its factorization.

16929874820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4676951 (or 4676949 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 16929874820 in words is "sixteen billion, nine hundred twenty-nine million, eight hundred seventy-four thousand, eight hundred twenty".