2389991852 has 36 divisors (see below), whose sum is σ = 4475713704. Its totient is φ = 1116418560.

The previous prime is 2389991809. The next prime is 2389991873. The reversal of 2389991852 is 2581999832.

It is a super-2 number, since 2×2389991852² = 11424122105252779808, which contains 22 as substring.

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, 150827 + ... + 165917.

Almost surely, 2^2389991852 is an apocalyptic number.

It is an amenable number.

2389991852 is a deficient number, since it is larger than the sum of its proper divisors (2085721852).

2389991852 is a wasteful number, since it uses less digits than its factorization.

2389991852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15266 (or 15247 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 56.

The square root of 2389991852 is about 48887.5429122798. The cubic root of 2389991852 is about 1337.0022561329.

The spelling of 2389991852 in words is "two billion, three hundred eighty-nine million, nine hundred ninety-one thousand, eight hundred fifty-two".