249001798900 has 36 divisors (see below), whose sum is σ = 542693490220. Its totient is φ = 99165772800.

The previous prime is 249001798849. The next prime is 249001798943. The reversal of 249001798900 is 9897100942.

It can be written as a sum of positive squares in 6 ways, for example, as 6285952656 + 242715846244 = 79284^2 + 492662^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5413821 + ... + 5459620.

Almost surely, 2^249001798900 is an apocalyptic number.

249001798900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

249001798900 is an abundant number, since it is smaller than the sum of its proper divisors (293691691320).

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

249001798900 is a wasteful number, since it uses less digits than its factorization.

249001798900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10873684 (or 10873677 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 249001798900 in words is "two hundred forty-nine billion, one million, seven hundred ninety-eight thousand, nine hundred".