1330631473 has 4 divisors (see below), whose sum is σ = 1330724980. Its totient is φ = 1330537968.

The previous prime is 1330631453. The next prime is 1330631501. The reversal of 1330631473 is 3741360331.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3741360331 = 41 ⋅91252691.

It can be written as a sum of positive squares in 2 ways, for example, as 198443569 + 1132187904 = 14087^2 + 33648^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330631473 - 2⁵ = 1330631441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1330631413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20490 + ... + 55507.

It is an arithmetic number, because the mean of its divisors is an integer number (332681245).

Almost surely, 2^1330631473 is an apocalyptic number.

It is an amenable number.

1330631473 is a deficient number, since it is larger than the sum of its proper divisors (93507).

1330631473 is an equidigital number, since it uses as much as digits as its factorization.

1330631473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93506.

The product of its (nonzero) digits is 13608, while the sum is 31.

The square root of 1330631473 is about 36477.8216591945. The cubic root of 1330631473 is about 1099.8984680392.

The spelling of 1330631473 in words is "one billion, three hundred thirty million, six hundred thirty-one thousand, four hundred seventy-three".