1244985957 has 12 divisors (see below), whose sum is σ = 1864917600. Its totient is φ = 829990476.

The previous prime is 1244985949. The next prime is 1244985967. The reversal of 1244985957 is 7595894421.

It is a happy number.

1244985957 is a `hidden beast` number, since 1 + 2 + 4 + 49 + 8 + 595 + 7 = 666.

It is not a de Polignac number, because 1244985957 - 2³ = 1244985949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244985967) 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, 2561457 + ... + 2561942.

It is an arithmetic number, because the mean of its divisors is an integer number (155409800).

Almost surely, 2^1244985957 is an apocalyptic number.

It is an amenable number.

1244985957 is a deficient number, since it is larger than the sum of its proper divisors (619931643).

1244985957 is an frugal number, since it uses more digits than its factorization.

1244985957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5123414 (or 5123402 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 1244985957 is about 35284.3585317914. The cubic root of 1244985957 is about 1075.7750911305.

The spelling of 1244985957 in words is "one billion, two hundred forty-four million, nine hundred eighty-five thousand, nine hundred fifty-seven".