2137544641 has 4 divisors (see below), whose sum is σ = 2152922800. Its totient is φ = 2122166484.

The previous prime is 2137544611. The next prime is 2137544677. The reversal of 2137544641 is 1464457312.

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 a de Polignac number, because none of the positive numbers 2^k-2137544641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2137544641.

It is not an unprimeable number, because it can be changed into a prime (2137544611) 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, 7688871 + ... + 7689148.

It is an arithmetic number, because the mean of its divisors is an integer number (538230700).

Almost surely, 2^2137544641 is an apocalyptic number.

It is an amenable number.

2137544641 is a deficient number, since it is larger than the sum of its proper divisors (15378159).

2137544641 is a wasteful number, since it uses less digits than its factorization.

2137544641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15378158.

The product of its digits is 80640, while the sum is 37.

The square root of 2137544641 is about 46233.5878015107. The cubic root of 2137544641 is about 1288.1657003699.

The spelling of 2137544641 in words is "two billion, one hundred thirty-seven million, five hundred forty-four thousand, six hundred forty-one".