2536537909 has 4 divisors (see below), whose sum is σ = 2536697440. Its totient is φ = 2536378380.

The previous prime is 2536537901. The next prime is 2536537961. The reversal of 2536537909 is 9097356352.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 2536537909 - 2³ = 2536537901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2536537901) 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, 52899 + ... + 88720.

It is an arithmetic number, because the mean of its divisors is an integer number (634174360).

Almost surely, 2^2536537909 is an apocalyptic number.

It is an amenable number.

2536537909 is a deficient number, since it is larger than the sum of its proper divisors (159531).

2536537909 is a wasteful number, since it uses less digits than its factorization.

2536537909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159530.

The product of its (nonzero) digits is 1530900, while the sum is 49.

The square root of 2536537909 is about 50364.0537387530. The cubic root of 2536537909 is about 1363.7887987006.

The spelling of 2536537909 in words is "two billion, five hundred thirty-six million, five hundred thirty-seven thousand, nine hundred nine".