1520632974 has 24 divisors (see below), whose sum is σ = 3537799848. Its totient is φ = 434466480.

The previous prime is 1520632973. The next prime is 1520632979. The reversal of 1520632974 is 4792360251.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520632973) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2585817 + ... + 2586404.

It is an arithmetic number, because the mean of its divisors is an integer number (147408327).

Almost surely, 2^1520632974 is an apocalyptic number.

1520632974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1520632974 is an abundant number, since it is smaller than the sum of its proper divisors (2017166874).

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

1520632974 is a wasteful number, since it uses less digits than its factorization.

1520632974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5172240 (or 5172233 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 1520632974 is about 38995.2942545636. The cubic root of 1520632974 is about 1149.9389946214.

The spelling of 1520632974 in words is "one billion, five hundred twenty million, six hundred thirty-two thousand, nine hundred seventy-four".