1296481998 has 32 divisors (see below), whose sum is σ = 3043482624. Its totient is φ = 360411552.

The previous prime is 1296481973. The next prime is 1296482027. The reversal of 1296481998 is 8991846921.

It is a super-2 number, since 2×1296481998² = 3361731142276144008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 415590 + ... + 418697.

It is an arithmetic number, because the mean of its divisors is an integer number (95108832).

Almost surely, 2^1296481998 is an apocalyptic number.

1296481998 is an abundant number, since it is smaller than the sum of its proper divisors (1747000626).

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

1296481998 is a wasteful number, since it uses less digits than its factorization.

1296481998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834336.

The product of its digits is 2239488, while the sum is 57.

The square root of 1296481998 is about 36006.6937943489. The cubic root of 1296481998 is about 1090.4075007509.

The spelling of 1296481998 in words is "one billion, two hundred ninety-six million, four hundred eighty-one thousand, nine hundred ninety-eight".