1296465980 has 24 divisors (see below), whose sum is σ = 2736840960. Its totient is φ = 515869760.

The previous prime is 1296465971. The next prime is 1296465991. The reversal of 1296465980 is 895646921.

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, 165875 + ... + 173514.

It is an arithmetic number, because the mean of its divisors is an integer number (114035040).

Almost surely, 2^1296465980 is an apocalyptic number.

1296465980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1296465980 is an abundant number, since it is smaller than the sum of its proper divisors (1440374980).

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

1296465980 is a wasteful number, since it uses less digits than its factorization.

1296465980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339589 (or 339587 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 50.

The square root of 1296465980 is about 36006.4713627981. The cubic root of 1296465980 is about 1090.4030100807.

The spelling of 1296465980 in words is "one billion, two hundred ninety-six million, four hundred sixty-five thousand, nine hundred eighty".