2391089774 has 4 divisors (see below), whose sum is σ = 3586634664. Its totient is φ = 1195544886.

The previous prime is 2391089749. The next prime is 2391089803. The reversal of 2391089774 is 4779801932.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 597772442 + ... + 597772445.

It is an arithmetic number, because the mean of its divisors is an integer number (896658666).

Almost surely, 2^2391089774 is an apocalyptic number.

2391089774 is a deficient number, since it is larger than the sum of its proper divisors (1195544890).

2391089774 is a wasteful number, since it uses less digits than its factorization.

2391089774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195544889.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 2391089774 is about 48898.7706798443. The cubic root of 2391089774 is about 1337.2069568961.

The spelling of 2391089774 in words is "two billion, three hundred ninety-one million, eighty-nine thousand, seven hundred seventy-four".