1914426665 has 8 divisors (see below), whose sum is σ = 2303822088. Its totient is φ = 1527201280.

The previous prime is 1914426641. The next prime is 1914426691. The reversal of 1914426665 is 5666244191.

It can be written as a sum of positive squares in 4 ways, for example, as 59660176 + 1854766489 = 7724^2 + 43067^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1914426665 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540566 + ... + 544095.

It is an arithmetic number, because the mean of its divisors is an integer number (287977761).

Almost surely, 2^1914426665 is an apocalyptic number.

It is an amenable number.

1914426665 is a deficient number, since it is larger than the sum of its proper divisors (389395423).

1914426665 is a wasteful number, since it uses less digits than its factorization.

1914426665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1085019.

The product of its digits is 311040, while the sum is 44.

The square root of 1914426665 is about 43754.1616877755. The cubic root of 1914426665 is about 1241.6892224381.

The spelling of 1914426665 in words is "one billion, nine hundred fourteen million, four hundred twenty-six thousand, six hundred sixty-five".