190312164520 has 32 divisors (see below), whose sum is σ = 432204271200. Its totient is φ = 75413416768.

The previous prime is 190312164461. The next prime is 190312164529. The reversal of 190312164520 is 25461213091.

It is not an unprimeable number, because it can be changed into a prime (190312164529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22228450 + ... + 22237009.

It is an arithmetic number, because the mean of its divisors is an integer number (13506383475).

Almost surely, 2^190312164520 is an apocalyptic number.

190312164520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190312164520 is an abundant number, since it is smaller than the sum of its proper divisors (241892106680).

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

190312164520 is a wasteful number, since it uses less digits than its factorization.

190312164520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44465577 (or 44465573 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 190312164520 in words is "one hundred ninety billion, three hundred twelve million, one hundred sixty-four thousand, five hundred twenty".