2591494191 has 24 divisors (see below), whose sum is σ = 4397689296. Its totient is φ = 1449786240.

The previous prime is 2591494187. The next prime is 2591494219. The reversal of 2591494191 is 1914941952.

2591494191 is a `hidden beast` number, since 2 + 591 + 49 + 4 + 19 + 1 = 666.

2591494191 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2591494191 - 2² = 2591494187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2591494141) 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, 1005510 + ... + 1008083.

It is an arithmetic number, because the mean of its divisors is an integer number (183237054).

Almost surely, 2^2591494191 is an apocalyptic number.

2591494191 is a deficient number, since it is larger than the sum of its proper divisors (1806195105).

2591494191 is a wasteful number, since it uses less digits than its factorization.

2591494191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013623 (or 2013620 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 2591494191 is about 50906.7204895385. The cubic root of 2591494191 is about 1373.5677323552.

The spelling of 2591494191 in words is "two billion, five hundred ninety-one million, four hundred ninety-four thousand, one hundred ninety-one".