2538309961 has 16 divisors (see below), whose sum is σ = 2802159360. Its totient is φ = 2280089680.

The previous prime is 2538309931. The next prime is 2538309989. The reversal of 2538309961 is 1699038352.

It is a happy number.

It is not a de Polignac number, because 2538309961 - 2⁵ = 2538309929 is a prime.

It is a super-2 number, since 2×2538309961² = 12886034916223643042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2538309911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 490590 + ... + 495736.

It is an arithmetic number, because the mean of its divisors is an integer number (175134960).

Almost surely, 2^2538309961 is an apocalyptic number.

It is an amenable number.

2538309961 is a deficient number, since it is larger than the sum of its proper divisors (263849399).

2538309961 is a wasteful number, since it uses less digits than its factorization.

2538309961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5684.

The product of its (nonzero) digits is 349920, while the sum is 46.

The square root of 2538309961 is about 50381.6430954767. The cubic root of 2538309961 is about 1364.1063104949.

The spelling of 2538309961 in words is "two billion, five hundred thirty-eight million, three hundred nine thousand, nine hundred sixty-one".