1531980360 has 48 divisors (see below), whose sum is σ = 4978937340. Its totient is φ = 408528000.

The previous prime is 1531980353. The next prime is 1531980379. The reversal of 1531980360 is 630891351.

It is a happy number.

1531980360 is a `hidden beast` number, since 1 + 531 + 98 + 0 + 36 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1413910404 + 118069956 = 37602^2 + 10866^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 2127391 + ... + 2128110.

Almost surely, 2^1531980360 is an apocalyptic number.

1531980360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1531980360 is an abundant number, since it is smaller than the sum of its proper divisors (3446956980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1531980360 is a wasteful number, since it uses less digits than its factorization.

1531980360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4255518 (or 4255511 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 1531980360 is about 39140.5206914778. The cubic root of 1531980360 is about 1152.7922971250.

The spelling of 1531980360 in words is "one billion, five hundred thirty-one million, nine hundred eighty thousand, three hundred sixty".