190931497972 has 12 divisors (see below), whose sum is σ = 343160665540. Its totient is φ = 92885593536.

The previous prime is 190931497951. The next prime is 190931497993. The reversal of 190931497972 is 279794139091.

It is an interprime number because it is at equal distance from previous prime (190931497951) and next prime (190931497993).

It can be written as a sum of positive squares in 2 ways, for example, as 72482639076 + 118448858896 = 269226^2 + 344164^2 .

It is a super-3 number, since 3×190931497972³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (61) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 190931497972.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645038697 + ... + 645038992.

Almost surely, 2^190931497972 is an apocalyptic number.

It is an amenable number.

190931497972 is a deficient number, since it is larger than the sum of its proper divisors (152229167568).

190931497972 is a wasteful number, since it uses less digits than its factorization.

190931497972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290077730 (or 1290077728 counting only the distinct ones).

The product of its (nonzero) digits is 7715736, while the sum is 61.

The spelling of 190931497972 in words is "one hundred ninety billion, nine hundred thirty-one million, four hundred ninety-seven thousand, nine hundred seventy-two".