249512091692 has 12 divisors (see below), whose sum is σ = 436656684576. Its totient is φ = 124753038960.

The previous prime is 249512091691. The next prime is 249512091701. The reversal of 249512091692 is 296190215942.

It is a self number, because there is not a number n which added to its sum of digits gives 249512091692.

It is not an unprimeable number, because it can be changed into a prime (249512091691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559559 + ... + 901182.

It is an arithmetic number, because the mean of its divisors is an integer number (36388057048).

Almost surely, 2^249512091692 is an apocalyptic number.

It is an amenable number.

249512091692 is a deficient number, since it is larger than the sum of its proper divisors (187144592884).

249512091692 is a wasteful number, since it uses less digits than its factorization.

249512091692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503448 (or 1503446 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 249512091692 in words is "two hundred forty-nine billion, five hundred twelve million, ninety-one thousand, six hundred ninety-two".