1248161872 has 40 divisors (see below), whose sum is σ = 2468071944. Its totient is φ = 611280384.

The previous prime is 1248161857. The next prime is 1248161909. The reversal of 1248161872 is 2781618421.

It can be written as a sum of positive squares in 4 ways, for example, as 236667456 + 1011494416 = 15384^2 + 31804^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 858298 + ... + 859750.

Almost surely, 2^1248161872 is an apocalyptic number.

It is an amenable number.

1248161872 is a deficient number, since it is larger than the sum of its proper divisors (1219910072).

1248161872 is a wasteful number, since it uses less digits than its factorization.

1248161872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2527 (or 2521 counting only the distinct ones).

The product of its digits is 43008, while the sum is 40.

The square root of 1248161872 is about 35329.3344403769. The cubic root of 1248161872 is about 1076.6890690905.

The spelling of 1248161872 in words is "one billion, two hundred forty-eight million, one hundred sixty-one thousand, eight hundred seventy-two".