1297376172 has 18 divisors (see below), whose sum is σ = 3279478748. Its totient is φ = 432458712.

The previous prime is 1297376089. The next prime is 1297376173. The reversal of 1297376172 is 2716737921.

1297376172 is a `hidden beast` number, since 1 + 29 + 7 + 3 + 7 + 617 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (1297376173) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18019078 + ... + 18019149.

Almost surely, 2^1297376172 is an apocalyptic number.

1297376172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1297376172 is an abundant number, since it is smaller than the sum of its proper divisors (1982102576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1297376172 is a wasteful number, since it uses less digits than its factorization.

1297376172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36038237 (or 36038232 counting only the distinct ones).

The product of its digits is 222264, while the sum is 45.

The square root of 1297376172 is about 36019.1084287216. The cubic root of 1297376172 is about 1090.6581251253.

The spelling of 1297376172 in words is "one billion, two hundred ninety-seven million, three hundred seventy-six thousand, one hundred seventy-two".