1916377 has 4 divisors (see below), whose sum is σ = 1920996. Its totient is φ = 1911760.

The previous prime is 1916371. The next prime is 1916413. The reversal of 1916377 is 7736191.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7736191 = 239 ⋅32369.

It can be written as a sum of positive squares in 2 ways, for example, as 741321 + 1175056 = 861^2 + 1084^2 .

It is a cyclic number.

It is not a de Polignac number, because 1916377 - 2⁷ = 1916249 is a prime.

It is a super-2 number, since 2×1916377² = 7345001612258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1916371) 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, 1618 + ... + 2539.

It is an arithmetic number, because the mean of its divisors is an integer number (480249).

2^1916377 is an apocalyptic number.

It is an amenable number.

1916377 is a deficient number, since it is larger than the sum of its proper divisors (4619).

1916377 is an equidigital number, since it uses as much as digits as its factorization.

1916377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4618.

The product of its digits is 7938, while the sum is 34.

The square root of 1916377 is about 1384.3326912271. The cubic root of 1916377 is about 124.2110739070.

The spelling of 1916377 in words is "one million, nine hundred sixteen thousand, three hundred seventy-seven".