2591889979 has 16 divisors (see below), whose sum is σ = 2984002560. Its totient is φ = 2205280800.

The previous prime is 2591889967. The next prime is 2591889991. The reversal of 2591889979 is 9799881952.

It is an interprime number because it is at equal distance from previous prime (2591889967) and next prime (2591889991).

It is a cyclic number.

It is not a de Polignac number, because 2591889979 - 2⁹ = 2591889467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2591889379) 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, 1014754 + ... + 1017304.

It is an arithmetic number, because the mean of its divisors is an integer number (186500160).

Almost surely, 2^2591889979 is an apocalyptic number.

2591889979 is a deficient number, since it is larger than the sum of its proper divisors (392112581).

2591889979 is a wasteful number, since it uses less digits than its factorization.

2591889979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570.

The product of its digits is 29393280, while the sum is 67.

The square root of 2591889979 is about 50910.6077256990. The cubic root of 2591889979 is about 1373.6376552017.

The spelling of 2591889979 in words is "two billion, five hundred ninety-one million, eight hundred eighty-nine thousand, nine hundred seventy-nine".