1311642498 has 16 divisors (see below), whose sum is σ = 2660233536. Its totient is φ = 431056080.

The previous prime is 1311642481. The next prime is 1311642499. The reversal of 1311642498 is 8942461131.

It is not an unprimeable number, because it can be changed into a prime (1311642499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1539061 + ... + 1539912.

It is an arithmetic number, because the mean of its divisors is an integer number (166264596).

Almost surely, 2^1311642498 is an apocalyptic number.

1311642498 is an abundant number, since it is smaller than the sum of its proper divisors (1348591038).

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

1311642498 is a wasteful number, since it uses less digits than its factorization.

1311642498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3079049.

The product of its digits is 41472, while the sum is 39.

The square root of 1311642498 is about 36216.6052798989. The cubic root of 1311642498 is about 1094.6412919832.

The spelling of 1311642498 in words is "one billion, three hundred eleven million, six hundred forty-two thousand, four hundred ninety-eight".