1296981933 has 32 divisors (see below), whose sum is σ = 1963315200. Its totient is φ = 754992576.

The previous prime is 1296981923. The next prime is 1296981949. The reversal of 1296981933 is 3391896921.

It is a happy number.

It is not a de Polignac number, because 1296981933 - 2⁶ = 1296981869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296981923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 976716 + ... + 978042.

It is an arithmetic number, because the mean of its divisors is an integer number (61353600).

Almost surely, 2^1296981933 is an apocalyptic number.

1296981933 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1296981933 is a deficient number, since it is larger than the sum of its proper divisors (666333267).

1296981933 is a wasteful number, since it uses less digits than its factorization.

1296981933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681.

The product of its digits is 629856, while the sum is 51.

The square root of 1296981933 is about 36013.6353760628. The cubic root of 1296981933 is about 1090.5476396859.

The spelling of 1296981933 in words is "one billion, two hundred ninety-six million, nine hundred eighty-one thousand, nine hundred thirty-three".