2539045389 has 4 divisors (see below), whose sum is σ = 3385393856. Its totient is φ = 1692696924.

The previous prime is 2539045361. The next prime is 2539045427. The reversal of 2539045389 is 9835409352.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2539045389 - 2⁷ = 2539045261 is a prime.

It is a super-2 number, since 2×2539045389² = 12893502974804322642, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539041389) 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, 423174229 + ... + 423174234.

It is an arithmetic number, because the mean of its divisors is an integer number (846348464).

Almost surely, 2^2539045389 is an apocalyptic number.

It is an amenable number.

2539045389 is a deficient number, since it is larger than the sum of its proper divisors (846348467).

2539045389 is an equidigital number, since it uses as much as digits as its factorization.

2539045389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846348466.

The product of its (nonzero) digits is 1166400, while the sum is 48.

The square root of 2539045389 is about 50388.9411379124. The cubic root of 2539045389 is about 1364.2380392331.

The spelling of 2539045389 in words is "two billion, five hundred thirty-nine million, forty-five thousand, three hundred eighty-nine".