244977901893 has 12 divisors (see below), whose sum is σ = 353874606540. Its totient is φ = 163310461056.

The previous prime is 244977901849. The next prime is 244977901913. The reversal of 244977901893 is 398109779442.

244977901893 is a `hidden beast` number, since 2 + 449 + 7 + 7 + 9 + 0 + 189 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 80634417444 + 164343484449 = 283962^2 + 405393^2 .

It is not a de Polignac number, because 244977901893 - 2³³ = 236387967301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 244977901893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (244977901823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 484846 + ... + 851487.

It is an arithmetic number, because the mean of its divisors is an integer number (29489550545).

Almost surely, 2^244977901893 is an apocalyptic number.

It is an amenable number.

244977901893 is a deficient number, since it is larger than the sum of its proper divisors (108896704647).

244977901893 is a wasteful number, since it uses less digits than its factorization.

244977901893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356708 (or 1356705 counting only the distinct ones).

The product of its (nonzero) digits is 27433728, while the sum is 63.

The spelling of 244977901893 in words is "two hundred forty-four billion, nine hundred seventy-seven million, nine hundred one thousand, eight hundred ninety-three".