2539909730 has 8 divisors (see below), whose sum is σ = 4571837532. Its totient is φ = 1015963888.

The previous prime is 2539909699. The next prime is 2539909739. The reversal of 2539909730 is 379099352.

It can be written as a sum of positive squares in 2 ways, for example, as 2208342049 + 331567681 = 46993^2 + 18209^2 .

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

It is a super-2 number, since 2×2539909730² = 12902282873097345800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2539909739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 126995477 + ... + 126995496.

Almost surely, 2^2539909730 is an apocalyptic number.

2539909730 is a deficient number, since it is larger than the sum of its proper divisors (2031927802).

2539909730 is a wasteful number, since it uses less digits than its factorization.

2539909730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253990980.

The product of its (nonzero) digits is 459270, while the sum is 47.

The square root of 2539909730 is about 50397.5171015398. The cubic root of 2539909730 is about 1364.3928261591.

The spelling of 2539909730 in words is "two billion, five hundred thirty-nine million, nine hundred nine thousand, seven hundred thirty".