2391634689 has 8 divisors (see below), whose sum is σ = 3190258272. Its totient is φ = 1593717120.

The previous prime is 2391634649. The next prime is 2391634711. The reversal of 2391634689 is 9864361932.

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

It is not a de Polignac number, because 2391634689 - 2¹⁵ = 2391601921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2391634649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168547 + ... + 182184.

It is an arithmetic number, because the mean of its divisors is an integer number (398782284).

Almost surely, 2^2391634689 is an apocalyptic number.

It is an amenable number.

2391634689 is a deficient number, since it is larger than the sum of its proper divisors (798623583).

2391634689 is a wasteful number, since it uses less digits than its factorization.

2391634689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353007.

The product of its digits is 1679616, while the sum is 51.

The square root of 2391634689 is about 48904.3422305218. The cubic root of 2391634689 is about 1337.3085296589.

The spelling of 2391634689 in words is "two billion, three hundred ninety-one million, six hundred thirty-four thousand, six hundred eighty-nine".