190788998436 has 81 divisors (see below), whose sum is σ = 494040465009. Its totient is φ = 62080657632.

The previous prime is 190788998371. The next prime is 190788998447. The reversal of 190788998436 is 634899887091.

The square root of 190788998436 is 436794.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 72689552100 + 118099446336 = 269610^2 + 343656^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 112692006 + ... + 112693698.

Almost surely, 2^190788998436 is an apocalyptic number.

190788998436 is the 436794-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190788998436

190788998436 is an abundant number, since it is smaller than the sum of its proper divisors (303251466573).

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

190788998436 is an equidigital number, since it uses as much as digits as its factorization.

190788998436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3482 (or 1741 counting only the distinct ones).

The product of its (nonzero) digits is 188116992, while the sum is 72.

The spelling of 190788998436 in words is "one hundred ninety billion, seven hundred eighty-eight million, nine hundred ninety-eight thousand, four hundred thirty-six".