1537480765 has 12 divisors (see below), whose sum is σ = 1953964404. Its totient is φ = 1157360384.

The previous prime is 1537480757. The next prime is 1537480801. The reversal of 1537480765 is 5670847351.

It can be written as a sum of positive squares in 6 ways, for example, as 213539769 + 1323940996 = 14613^2 + 36386^2 .

It is not a de Polignac number, because 1537480765 - 2³ = 1537480757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 359379 + ... + 363631.

It is an arithmetic number, because the mean of its divisors is an integer number (162830367).

Almost surely, 2^1537480765 is an apocalyptic number.

It is an amenable number.

1537480765 is a deficient number, since it is larger than the sum of its proper divisors (416483639).

1537480765 is an frugal number, since it uses more digits than its factorization.

1537480765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8528 (or 4275 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 46.

The square root of 1537480765 is about 39210.7225768666. The cubic root of 1537480765 is about 1154.1703067275.

The spelling of 1537480765 in words is "one billion, five hundred thirty-seven million, four hundred eighty thousand, seven hundred sixty-five".