249057803828 has 12 divisors (see below), whose sum is σ = 450880507140. Its totient is φ = 120234801792.

The previous prime is 249057803809. The next prime is 249057803941. The reversal of 249057803828 is 828308750942.

It can be written as a sum of positive squares in 2 ways, for example, as 156762148624 + 92295655204 = 395932^2 + 303802^2 .

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, 1073524901 + ... + 1073525132.

It is an arithmetic number, because the mean of its divisors is an integer number (37573375595).

Almost surely, 2^249057803828 is an apocalyptic number.

It is an amenable number.

249057803828 is a deficient number, since it is larger than the sum of its proper divisors (201822703312).

249057803828 is a wasteful number, since it uses less digits than its factorization.

249057803828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147050066 (or 2147050064 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 249057803828 in words is "two hundred forty-nine billion, fifty-seven million, eight hundred three thousand, eight hundred twenty-eight".