188986803953960 has 32 divisors (see below), whose sum is σ = 439883078171400. Its totient is φ = 72988007043840.

The previous prime is 188986803953921. The next prime is 188986803954041. The reversal of 188986803953960 is 69359308689881.

It can be written as a sum of positive squares in 4 ways, for example, as 102615319726084 + 86371484227876 = 10129922^2 + 9293626^2 .

It is a super-2 number, since 2×188986803953960² (a number of 29 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (83) 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, 81459828131 + ... + 81459830450.

Almost surely, 2^{188986803953960} is an apocalyptic number.

188986803953960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

188986803953960 is an abundant number, since it is smaller than the sum of its proper divisors (250896274217440).

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

188986803953960 is a wasteful number, since it uses less digits than its factorization.

188986803953960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162919658621 (or 162919658617 counting only the distinct ones).

The product of its (nonzero) digits is 4837294080, while the sum is 83.

The spelling of 188986803953960 in words is "one hundred eighty-eight trillion, nine hundred eighty-six billion, eight hundred three million, nine hundred fifty-three thousand, nine hundred sixty".