1631424560 has 20 divisors (see below), whose sum is σ = 3793062288. Its totient is φ = 652569792.

The previous prime is 1631424559. The next prime is 1631424583. The reversal of 1631424560 is 654241361.

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10196324 + ... + 10196483.

Almost surely, 2^1631424560 is an apocalyptic number.

1631424560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1631424560 is an abundant number, since it is smaller than the sum of its proper divisors (2161637728).

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

1631424560 is a wasteful number, since it uses less digits than its factorization.

1631424560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20392820 (or 20392814 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1631424560 is about 40390.8969942486. The cubic root of 1631424560 is about 1177.2146696491.

The spelling of 1631424560 in words is "one billion, six hundred thirty-one million, four hundred twenty-four thousand, five hundred sixty".