1915916 has 12 divisors (see below), whose sum is σ = 3363360. Its totient is φ = 954960.

The previous prime is 1915909. The next prime is 1915919. The reversal of 1915916 is 6195191.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1915919) 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, 1325 + ... + 2363.

It is an arithmetic number, because the mean of its divisors is an integer number (280280).

2^1915916 is an apocalyptic number.

It is an amenable number.

1915916 is a deficient number, since it is larger than the sum of its proper divisors (1447444).

1915916 is a wasteful number, since it uses less digits than its factorization.

1915916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504 (or 1502 counting only the distinct ones).

The product of its digits is 2430, while the sum is 32.

The square root of 1915916 is about 1384.1661749949. The cubic root of 1915916 is about 124.2011131151.

Subtracting 1915916 from its reverse (6195191), we obtain a triangular number (4279275 = T₂₉₂₅).

The spelling of 1915916 in words is "one million, nine hundred fifteen thousand, nine hundred sixteen".