2538140091 has 8 divisors (see below), whose sum is σ = 3531325440. Its totient is φ = 1618524072.

The previous prime is 2538140081. The next prime is 2538140093. The reversal of 2538140091 is 1900418352.

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

It is not a de Polignac number, because 2538140091 - 2⁶ = 2538140027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2538140093) 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, 18392251 + ... + 18392388.

It is an arithmetic number, because the mean of its divisors is an integer number (441415680).

Almost surely, 2^2538140091 is an apocalyptic number.

2538140091 is a deficient number, since it is larger than the sum of its proper divisors (993185349).

2538140091 is a wasteful number, since it uses less digits than its factorization.

2538140091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36784665.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 2538140091 is about 50379.9572349957. The cubic root of 2538140091 is about 1364.0758800232.

The spelling of 2538140091 in words is "two billion, five hundred thirty-eight million, one hundred forty thousand, ninety-one".