1253737664 has 28 divisors (see below), whose sum is σ = 2494330800. Its totient is φ = 625244928.

The previous prime is 1253737651. The next prime is 1253737679. The reversal of 1253737664 is 4667373521.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

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, 284 + ... + 50075.

Almost surely, 2^1253737664 is an apocalyptic number.

It is an amenable number.

1253737664 is a deficient number, since it is larger than the sum of its proper divisors (1240593136).

1253737664 is an equidigital number, since it uses as much as digits as its factorization.

1253737664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50760 (or 50750 counting only the distinct ones).

The product of its digits is 635040, while the sum is 44.

The square root of 1253737664 is about 35408.1581559956. The cubic root of 1253737664 is about 1078.2899503792.

The spelling of 1253737664 in words is "one billion, two hundred fifty-three million, seven hundred thirty-seven thousand, six hundred sixty-four".