1331940500 has 48 divisors (see below), whose sum is σ = 3173421888. Its totient is φ = 484340000.

The previous prime is 1331940481. The next prime is 1331940529. The reversal of 1331940500 is 50491331.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1331940500.

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, 115586 + ... + 126585.

It is an arithmetic number, because the mean of its divisors is an integer number (66112956).

Almost surely, 2^1331940500 is an apocalyptic number.

1331940500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1331940500 is an abundant number, since it is smaller than the sum of its proper divisors (1841481388).

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

1331940500 is a wasteful number, since it uses less digits than its factorization.

1331940500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242201 (or 242189 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1331940500 is about 36495.7600277073. The cubic root of 1331940500 is about 1100.2590299075.

The spelling of 1331940500 in words is "one billion, three hundred thirty-one million, nine hundred forty thousand, five hundred".