191439292398292 has 12 divisors (see below), whose sum is σ = 335018862793300. Its totient is φ = 95719617314496.

The previous prime is 191439292398259. The next prime is 191439292398307. The reversal of 191439292398292 is 292893292934191.

It can be written as a sum of positive squares in 2 ways, for example, as 185892391303696 + 5546901094596 = 13634236^2 + 2355186^2 .

It is a super-2 number, since 2×191439292398292² (a number of 29 digits) contains 22 as substring.

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, 15958558 + ... + 25249834.

Almost surely, 2^{191439292398292} is an apocalyptic number.

It is an amenable number.

191439292398292 is a deficient number, since it is larger than the sum of its proper divisors (143579570395008).

191439292398292 is a wasteful number, since it uses less digits than its factorization.

191439292398292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14442330 (or 14442328 counting only the distinct ones).

The product of its digits is 272097792, while the sum is 73.

The spelling of 191439292398292 in words is "one hundred ninety-one trillion, four hundred thirty-nine billion, two hundred ninety-two million, three hundred ninety-eight thousand, two hundred ninety-two".