1913712516 has 81 divisors (see below), whose sum is σ = 5072910661. Its totient is φ = 608244384.

The previous prime is 1913712503. The next prime is 1913712529. The reversal of 1913712516 is 6152173191.

It is a happy number.

The square root of 1913712516 is 43746.

It is a perfect power (a square), and thus also a powerful number.

1913712516 is a `hidden beast` number, since 1 + 9 + 137 + 1 + 2 + 516 = 666.

It is an interprime number because it is at equal distance from previous prime (1913712503) and next prime (1913712529).

It can be written as a sum of positive squares in only one way, i.e., 107122500 + 1806590016 = 10350^2 + 42504^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a Duffinian number.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 6036790 + ... + 6037106.

Almost surely, 2^1913712516 is an apocalyptic number.

1913712516 is the 43746-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1913712516

1913712516 is an abundant number, since it is smaller than the sum of its proper divisors (3159198145).

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

1913712516 is a wasteful number, since it uses less digits than its factorization.

1913712516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 345 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The cubic root of 1913712516 is about 1241.5348052055.

Multiplying 1913712516 by its sum of digits (36), we get a square (68893650576 = 262476²).

1913712516 divided by its sum of digits (36) gives a square (53158681 = 7291²).

The spelling of 1913712516 in words is "one billion, nine hundred thirteen million, seven hundred twelve thousand, five hundred sixteen".