1361500500 has 48 divisors (see below), whose sum is σ = 3964693824. Its totient is φ = 363066400.

The previous prime is 1361500487. The next prime is 1361500561. The reversal of 1361500500 is 50051631.

It is a happy number.

It is a super-2 number, since 2×1361500500² = 3707367223000500000, 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, 452334 + ... + 455333.

It is an arithmetic number, because the mean of its divisors is an integer number (82597788).

Almost surely, 2^1361500500 is an apocalyptic number.

1361500500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1361500500 is an abundant number, since it is smaller than the sum of its proper divisors (2603193324).

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

1361500500 is a wasteful number, since it uses less digits than its factorization.

1361500500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907689 (or 907677 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 1361500500 is about 36898.5162303310. The cubic root of 1361500500 is about 1108.3389651789.

The spelling of 1361500500 in words is "one billion, three hundred sixty-one million, five hundred thousand, five hundred".