1331440948 has 24 divisors (see below), whose sum is σ = 2407345920. Its totient is φ = 643666560.

The previous prime is 1331440927. The next prime is 1331440963. The reversal of 1331440948 is 8490441331.

It is a super-2 number, since 2×1331440948² = 3545469996022277408, 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 7 ways as a sum of consecutive naturals, for example, 154908 + ... + 163276.

It is an arithmetic number, because the mean of its divisors is an integer number (100306080).

Almost surely, 2^1331440948 is an apocalyptic number.

It is an amenable number.

1331440948 is a deficient number, since it is larger than the sum of its proper divisors (1075904972).

1331440948 is a wasteful number, since it uses less digits than its factorization.

1331440948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9687 (or 9685 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 1331440948 is about 36488.9154127661. The cubic root of 1331440948 is about 1100.1214598664.

The spelling of 1331440948 in words is "one billion, three hundred thirty-one million, four hundred forty thousand, nine hundred forty-eight".