190137778612 has 12 divisors (see below), whose sum is σ = 332825828580. Its totient is φ = 95044684736.

The previous prime is 190137778609. The next prime is 190137778613. The reversal of 190137778612 is 216877731091.

It can be written as a sum of positive squares in 2 ways, for example, as 89823686436 + 100314092176 = 299706^2 + 316724^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 190137778612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190137778613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6033463 + ... + 6064894.

It is an arithmetic number, because the mean of its divisors is an integer number (27735485715).

Almost surely, 2^190137778612 is an apocalyptic number.

It is an amenable number.

190137778612 is a deficient number, since it is larger than the sum of its proper divisors (142688049968).

190137778612 is a wasteful number, since it uses less digits than its factorization.

190137778612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12102290 (or 12102288 counting only the distinct ones).

The product of its (nonzero) digits is 889056, while the sum is 52.

The spelling of 190137778612 in words is "one hundred ninety billion, one hundred thirty-seven million, seven hundred seventy-eight thousand, six hundred twelve".