2578364091 has 12 divisors (see below), whose sum is σ = 3732604200. Its totient is φ = 1715078400.

The previous prime is 2578364039. The next prime is 2578364119. The reversal of 2578364091 is 1904638752.

2578364091 is a `hidden beast` number, since 2 + 578 + 36 + 40 + 9 + 1 = 666.

2578364091 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2578364091 - 2⁶ = 2578364027 is a prime.

It is a super-2 number, since 2×2578364091² = 13295922771516512562, which contains 22 as substring.

2578364091 is strictly pandigital in base 10.

It is not an unprimeable number, because it can be changed into a prime (2578314091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 314985 + ... + 323066.

It is an arithmetic number, because the mean of its divisors is an integer number (311050350).

It is a 1-persistent number, because it is pandigital, but 2⋅2578364091 = 5156728182 is not.

Almost surely, 2^2578364091 is an apocalyptic number.

2578364091 is a deficient number, since it is larger than the sum of its proper divisors (1154240109).

2578364091 is a wasteful number, since it uses less digits than its factorization.

2578364091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638506 (or 638503 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 2578364091 is about 50777.5943798050. The cubic root of 2578364091 is about 1371.2440244467.

The spelling of 2578364091 in words is "two billion, five hundred seventy-eight million, three hundred sixty-four thousand, ninety-one".