1531980456 has 32 divisors (see below), whose sum is σ = 3834129600. Its totient is φ = 510103040.

The previous prime is 1531980433. The next prime is 1531980473. The reversal of 1531980456 is 6540891351.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12060 + ... + 56651.

It is an arithmetic number, because the mean of its divisors is an integer number (119816550).

Almost surely, 2^1531980456 is an apocalyptic number.

It is an amenable number.

1531980456 is an abundant number, since it is smaller than the sum of its proper divisors (2302149144).

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

1531980456 is a wasteful number, since it uses less digits than its factorization.

1531980456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69649 (or 69645 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 1531980456 is about 39140.5219178283. The cubic root of 1531980456 is about 1152.7923212045.

The spelling of 1531980456 in words is "one billion, five hundred thirty-one million, nine hundred eighty thousand, four hundred fifty-six".