190927808640 has 160 divisors (see below), whose sum is σ = 681837862860. Its totient is φ = 50914068480.

The previous prime is 190927808557. The next prime is 190927808677. The reversal of 190927808640 is 46808729091.

It can be written as a sum of positive squares in 2 ways, for example, as 187433580096 + 3494228544 = 432936^2 + 59112^2 .

It is a tau number, because it is divible by the number of its divisors (160).

It is a super-2 number, since 2×190927808640² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1789671 + ... + 1893350.

Almost surely, 2^190927808640 is an apocalyptic number.

190927808640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190927808640 is an abundant number, since it is smaller than the sum of its proper divisors (490910054220).

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

190927808640 is an equidigital number, since it uses as much as digits as its factorization.

190927808640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3683052 (or 3683031 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 190927808640 in words is "one hundred ninety billion, nine hundred twenty-seven million, eight hundred eight thousand, six hundred forty".