188897823930 has 32 divisors (see below), whose sum is σ = 453385512000. Its totient is φ = 50369338112.

The previous prime is 188897823911. The next prime is 188897823937. The reversal of 188897823930 is 39328798881.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (188897823937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253186 + ... + 664754.

It is an arithmetic number, because the mean of its divisors is an integer number (14168297250).

Almost surely, 2^188897823930 is an apocalyptic number.

188897823930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188897823930 is an abundant number, since it is smaller than the sum of its proper divisors (264487688070).

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

188897823930 is a wasteful number, since it uses less digits than its factorization.

188897823930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426878.

The product of its (nonzero) digits is 41803776, while the sum is 66.

The spelling of 188897823930 in words is "one hundred eighty-eight billion, eight hundred ninety-seven million, eight hundred twenty-three thousand, nine hundred thirty".