1253863984 has 20 divisors (see below), whose sum is σ = 2460115360. Its totient is φ = 618995520.

The previous prime is 1253863969. The next prime is 1253863991. The reversal of 1253863984 is 4893683521.

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, 494727 + ... + 497254.

It is an arithmetic number, because the mean of its divisors is an integer number (123005768).

Almost surely, 2^1253863984 is an apocalyptic number.

It is an amenable number.

1253863984 is a deficient number, since it is larger than the sum of its proper divisors (1206251376).

1253863984 is an equidigital number, since it uses as much as digits as its factorization.

1253863984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 992068 (or 992062 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 49.

The square root of 1253863984 is about 35409.9418807769. The cubic root of 1253863984 is about 1078.3261634340.

The spelling of 1253863984 in words is "one billion, two hundred fifty-three million, eight hundred sixty-three thousand, nine hundred eighty-four".