2591151885 has 96 divisors (see below), whose sum is σ = 5589792000. Its totient is φ = 1083414528.

The previous prime is 2591151853. The next prime is 2591151929. The reversal of 2591151885 is 5881511952.

It is a happy number.

2591151885 is a `hidden beast` number, since 2 + 59 + 1 + 1 + 518 + 85 = 666.

It is not a de Polignac number, because 2591151885 - 2⁵ = 2591151853 is a prime.

It is a super-2 number, since 2×2591151885² = 13428136182278106450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 2591151885.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 166101 + ... + 181029.

It is an arithmetic number, because the mean of its divisors is an integer number (58227000).

Almost surely, 2^2591151885 is an apocalyptic number.

It is an amenable number.

2591151885 is an abundant number, since it is smaller than the sum of its proper divisors (2998640115).

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

2591151885 is a wasteful number, since it uses less digits than its factorization.

2591151885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14995 (or 14992 counting only the distinct ones).

The product of its digits is 144000, while the sum is 45.

The square root of 2591151885 is about 50903.3582880344. The cubic root of 2591151885 is about 1373.5072522943.

The spelling of 2591151885 in words is "two billion, five hundred ninety-one million, one hundred fifty-one thousand, eight hundred eighty-five".