1331908488 has 64 divisors (see below), whose sum is σ = 3785812800. Its totient is φ = 433641600.

The previous prime is 1331908483. The next prime is 1331908507. The reversal of 1331908488 is 8848091331.

It is a super-2 number, since 2×1331908488² = 3547960440812892288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1331908483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62413 + ... + 80988.

It is an arithmetic number, because the mean of its divisors is an integer number (59153325).

Almost surely, 2^1331908488 is an apocalyptic number.

1331908488 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1331908488 is an abundant number, since it is smaller than the sum of its proper divisors (2453904312).

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

1331908488 is a wasteful number, since it uses less digits than its factorization.

1331908488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143459 (or 143449 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1331908488 is about 36495.3214535781. The cubic root of 1331908488 is about 1100.2502152559.

The spelling of 1331908488 in words is "one billion, three hundred thirty-one million, nine hundred eight thousand, four hundred eighty-eight".