1297764148 has 24 divisors (see below), whose sum is σ = 2315809440. Its totient is φ = 636124320.

The previous prime is 1297764133. The next prime is 1297764157. The reversal of 1297764148 is 8414677921.

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, 509863 + ... + 512401.

It is an arithmetic number, because the mean of its divisors is an integer number (96492060).

Almost surely, 2^1297764148 is an apocalyptic number.

It is an amenable number.

1297764148 is a deficient number, since it is larger than the sum of its proper divisors (1018045292).

1297764148 is a wasteful number, since it uses less digits than its factorization.

1297764148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5007 (or 5005 counting only the distinct ones).

The product of its digits is 677376, while the sum is 49.

The square root of 1297764148 is about 36024.4937230213. The cubic root of 1297764148 is about 1090.7668335098.

The spelling of 1297764148 in words is "one billion, two hundred ninety-seven million, seven hundred sixty-four thousand, one hundred forty-eight".