2539190394 has 24 divisors (see below), whose sum is σ = 5924778132. Its totient is φ = 781289280.

The previous prime is 2539190389. The next prime is 2539190417. The reversal of 2539190394 is 4930919352.

2539190394 is a `hidden beast` number, since 253 + 9 + 1 + 9 + 0 + 394 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2325650625 + 213539769 = 48225^2 + 14613^2 .

It is a Curzon number.

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, 5425387 + ... + 5425854.

Almost surely, 2^2539190394 is an apocalyptic number.

2539190394 is an abundant number, since it is smaller than the sum of its proper divisors (3385587738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2539190394 is a wasteful number, since it uses less digits than its factorization.

2539190394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10851262 (or 10851259 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 45.

The square root of 2539190394 is about 50390.3799747531. The cubic root of 2539190394 is about 1364.2640093046.

The spelling of 2539190394 in words is "two billion, five hundred thirty-nine million, one hundred ninety thousand, three hundred ninety-four".