249198643204 has 81 divisors (see below), whose sum is σ = 512718032799. Its totient is φ = 105670232640.

The previous prime is 249198643193. The next prime is 249198643231. The reversal of 249198643204 is 402346891942.

The square root of 249198643204 is 499198.

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

It can be written as a sum of positive squares in 4 ways, for example, as 349316100 + 248849327104 = 18690^2 + 498848^2 .

It is an unprimeable number.

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 26 ways as a sum of consecutive naturals, for example, 1264967634 + ... + 1264967830.

Almost surely, 2^249198643204 is an apocalyptic number.

249198643204 is the 499198-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 249198643204

249198643204 is an abundant number, since it is smaller than the sum of its proper divisors (263519389595).

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

249198643204 is an equidigital number, since it uses as much as digits as its factorization.

249198643204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 52.

The spelling of 249198643204 in words is "two hundred forty-nine billion, one hundred ninety-eight million, six hundred forty-three thousand, two hundred four".