2291626140 has 48 divisors (see below), whose sum is σ = 6449157792. Its totient is φ = 607995136.

The previous prime is 2291626121. The next prime is 2291626247. The reversal of 2291626140 is 416261922.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85119 + ... + 108758.

It is an arithmetic number, because the mean of its divisors is an integer number (134357454).

Almost surely, 2^2291626140 is an apocalyptic number.

2291626140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2291626140 is an abundant number, since it is smaller than the sum of its proper divisors (4157531652).

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

2291626140 is a wasteful number, since it uses less digits than its factorization.

2291626140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194086 (or 194084 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 2291626140 is about 47870.9320987173. The cubic root of 2291626140 is about 1318.4022104512.

The spelling of 2291626140 in words is "two billion, two hundred ninety-one million, six hundred twenty-six thousand, one hundred forty".