1331376465 has 8 divisors (see below), whose sum is σ = 2130202368. Its totient is φ = 710067440.

The previous prime is 1331376443. The next prime is 1331376469. The reversal of 1331376465 is 5646731331.

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

It is not a de Polignac number, because 1331376465 - 2⁸ = 1331376209 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1331376469) 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, 44379201 + ... + 44379230.

It is an arithmetic number, because the mean of its divisors is an integer number (266275296).

Almost surely, 2^1331376465 is an apocalyptic number.

1331376465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1331376465 is a deficient number, since it is larger than the sum of its proper divisors (798825903).

1331376465 is an equidigital number, since it uses as much as digits as its factorization.

1331376465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88758439.

The product of its digits is 136080, while the sum is 39.

The square root of 1331376465 is about 36488.0318049631. The cubic root of 1331376465 is about 1100.1036995901.

The spelling of 1331376465 in words is "one billion, three hundred thirty-one million, three hundred seventy-six thousand, four hundred sixty-five".