1913870680 has 16 divisors (see below), whose sum is σ = 4306209120. Its totient is φ = 765548256.

The previous prime is 1913870671. The next prime is 1913870681. The reversal of 1913870680 is 860783191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913870681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23923344 + ... + 23923423.

It is an arithmetic number, because the mean of its divisors is an integer number (269138070).

Almost surely, 2^1913870680 is an apocalyptic number.

1913870680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1913870680 is an abundant number, since it is smaller than the sum of its proper divisors (2392338440).

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

1913870680 is a wasteful number, since it uses less digits than its factorization.

1913870680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47846778 (or 47846774 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1913870680 is about 43747.8077165016. The cubic root of 1913870680 is about 1241.5690076088.

The spelling of 1913870680 in words is "one billion, nine hundred thirteen million, eight hundred seventy thousand, six hundred eighty".