1571231264 has 12 divisors (see below), whose sum is σ = 3093361614. Its totient is φ = 785615616.

The previous prime is 1571231261. The next prime is 1571231267. The reversal of 1571231264 is 4621321751.

It is an interprime number because it is at equal distance from previous prime (1571231261) and next prime (1571231267).

It can be written as a sum of positive squares in only one way, i.e., 1017099664 + 554131600 = 31892^2 + 23540^2 .

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 49100977 = 1571231264 / (1 + 5 + 7 + 1 + 2 + 3 + 1 + 2 + 6 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 1571231264.

It is not an unprimeable number, because it can be changed into a prime (1571231261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24550457 + ... + 24550520.

Almost surely, 2^1571231264 is an apocalyptic number.

It is an amenable number.

1571231264 is a deficient number, since it is larger than the sum of its proper divisors (1522130350).

1571231264 is an equidigital number, since it uses as much as digits as its factorization.

1571231264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49100987 (or 49100979 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 1571231264 is about 39638.7596173241. The cubic root of 1571231264 is about 1162.5546314789.

The spelling of 1571231264 in words is "one billion, five hundred seventy-one million, two hundred thirty-one thousand, two hundred sixty-four".