1296733986 has 24 divisors (see below), whose sum is σ = 2834458380. Its totient is φ = 428418816.

The previous prime is 1296733981. The next prime is 1296734009. The reversal of 1296733986 is 6893376921.

It can be written as a sum of positive squares in 2 ways, for example, as 1252098225 + 44635761 = 35385^2 + 6681^2 .

It is not an unprimeable number, because it can be changed into a prime (1296733981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 316731 + ... + 320798.

Almost surely, 2^1296733986 is an apocalyptic number.

1296733986 is an abundant number, since it is smaller than the sum of its proper divisors (1537724394).

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

1296733986 is a wasteful number, since it uses less digits than its factorization.

1296733986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637650 (or 637647 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 1296733986 is about 36010.1928070373. The cubic root of 1296733986 is about 1090.4781410955.

The spelling of 1296733986 in words is "one billion, two hundred ninety-six million, seven hundred thirty-three thousand, nine hundred eighty-six".