1331888497 has 8 divisors (see below), whose sum is σ = 1346651136. Its totient is φ = 1317192912.

The previous prime is 1331888489. The next prime is 1331888507. The reversal of 1331888497 is 7948881331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1331888497 - 2³ = 1331888489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1331888417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23718 + ... + 56800.

It is an arithmetic number, because the mean of its divisors is an integer number (168331392).

Almost surely, 2^1331888497 is an apocalyptic number.

It is an amenable number.

1331888497 is a deficient number, since it is larger than the sum of its proper divisors (14762639).

1331888497 is a wasteful number, since it uses less digits than its factorization.

1331888497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33527.

The product of its digits is 1161216, while the sum is 52.

The square root of 1331888497 is about 36495.0475681290. The cubic root of 1331888497 is about 1100.2447105704.

The spelling of 1331888497 in words is "one billion, three hundred thirty-one million, eight hundred eighty-eight thousand, four hundred ninety-seven".