1916340265 has 12 divisors (see below), whose sum is σ = 2675054916. Its totient is φ = 1314061728.

The previous prime is 1916340253. The next prime is 1916340277. The reversal of 1916340265 is 5620436191.

It is an interprime number because it is at equal distance from previous prime (1916340253) and next prime (1916340277).

It can be written as a sum of positive squares in 2 ways, for example, as 928055296 + 988284969 = 30464^2 + 31437^2 .

It is not a de Polignac number, because 1916340265 - 2⁷ = 1916340137 is a prime.

It is a super-2 number, since 2×1916340265² = 7344720022520540450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3910654 + ... + 3911143.

It is an arithmetic number, because the mean of its divisors is an integer number (222921243).

Almost surely, 2^1916340265 is an apocalyptic number.

It is an amenable number.

1916340265 is a deficient number, since it is larger than the sum of its proper divisors (758714651).

1916340265 is an equidigital number, since it uses as much as digits as its factorization.

1916340265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7821816 (or 7821809 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 1916340265 is about 43776.0238600995. The cubic root of 1916340265 is about 1242.1028023519.

The spelling of 1916340265 in words is "one billion, nine hundred sixteen million, three hundred forty thousand, two hundred sixty-five".