2591404950 has 48 divisors (see below), whose sum is σ = 6455586816. Its totient is φ = 687933600.

The previous prime is 2591404909. The next prime is 2591404951. The reversal of 2591404950 is 594041952.

It is a super-2 number, since 2×2591404950² = 13430759229769005000, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2591404899 and 2591404908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591404951) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5286 + ... + 72185.

It is an arithmetic number, because the mean of its divisors is an integer number (134491392).

Almost surely, 2^2591404950 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2591404950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3227793408).

2591404950 is an abundant number, since it is smaller than the sum of its proper divisors (3864181866).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2591404950 is a wasteful number, since it uses less digits than its factorization.

2591404950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77709 (or 77704 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 2591404950 is about 50905.8439670732. The cubic root of 2591404950 is about 1373.5519653940.

The spelling of 2591404950 in words is "two billion, five hundred ninety-one million, four hundred four thousand, nine hundred fifty".