2134509091 has 24 divisors (see below), whose sum is σ = 2557270800. Its totient is φ = 1769507520.

The previous prime is 2134509073. The next prime is 2134509101. The reversal of 2134509091 is 1909054312.

It is not a de Polignac number, because 2134509091 - 2⁵ = 2134509059 is a prime.

It is a super-2 number, since 2×2134509091² = 9112258119123292562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2134509071) 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, 122385 + ... + 138733.

It is an arithmetic number, because the mean of its divisors is an integer number (106552950).

Almost surely, 2^2134509091 is an apocalyptic number.

2134509091 is a deficient number, since it is larger than the sum of its proper divisors (422761709).

2134509091 is a wasteful number, since it uses less digits than its factorization.

2134509091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16467 (or 16456 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 2134509091 is about 46200.7477320443. The cubic root of 2134509091 is about 1287.5556321957. Note that the first 3 decimals are identical.

It can be divided in two parts, 2134 and 509091, that added together give a square (511225 = 715²).

The spelling of 2134509091 in words is "two billion, one hundred thirty-four million, five hundred nine thousand, ninety-one".