1913688732 has 48 divisors (see below), whose sum is σ = 4545192960. Its totient is φ = 626563392.

The previous prime is 1913688709. The next prime is 1913688739. The reversal of 1913688732 is 2378863191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913688739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181633 + ... + 191879.

It is an arithmetic number, because the mean of its divisors is an integer number (94691520).

Almost surely, 2^1913688732 is an apocalyptic number.

1913688732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1913688732 is an abundant number, since it is smaller than the sum of its proper divisors (2631504228).

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

1913688732 is a wasteful number, since it uses less digits than its factorization.

1913688732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10530 (or 10528 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 1913688732 is about 43745.7281571584. The cubic root of 1913688732 is about 1241.5296618370.

The spelling of 1913688732 in words is "one billion, nine hundred thirteen million, six hundred eighty-eight thousand, seven hundred thirty-two".