188691246420 has 96 divisors (see below), whose sum is σ = 536433020928. Its totient is φ = 49547068032.

The previous prime is 188691246371. The next prime is 188691246433. The reversal of 188691246420 is 24642196881.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12144697 + ... + 12160223.

It is an arithmetic number, because the mean of its divisors is an integer number (5587843968).

Almost surely, 2^188691246420 is an apocalyptic number.

188691246420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188691246420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268216510464).

188691246420 is an abundant number, since it is smaller than the sum of its proper divisors (347741774508).

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

188691246420 is a wasteful number, since it uses less digits than its factorization.

188691246420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18629 (or 18627 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 51.

The spelling of 188691246420 in words is "one hundred eighty-eight billion, six hundred ninety-one million, two hundred forty-six thousand, four hundred twenty".