1321498136 has 16 divisors (see below), whose sum is σ = 2831781840. Its totient is φ = 566356320.

The previous prime is 1321498121. The next prime is 1321498141. The reversal of 1321498136 is 6318941231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321498136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11799035 + ... + 11799146.

It is an arithmetic number, because the mean of its divisors is an integer number (176986365).

Almost surely, 2^1321498136 is an apocalyptic number.

It is an amenable number.

1321498136 is an abundant number, since it is smaller than the sum of its proper divisors (1510283704).

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

1321498136 is a wasteful number, since it uses less digits than its factorization.

1321498136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23598194 (or 23598190 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 1321498136 is about 36352.4158206852. The cubic root of 1321498136 is about 1097.3761528845.

The spelling of 1321498136 in words is "one billion, three hundred twenty-one million, four hundred ninety-eight thousand, one hundred thirty-six".