2138094261 has 12 divisors (see below), whose sum is σ = 3088785388. Its totient is φ = 1425199104.

The previous prime is 2138094143. The next prime is 2138094269. The reversal of 2138094261 is 1624908312.

It can be written as a sum of positive squares in 2 ways, for example, as 1991926161 + 146168100 = 44631^2 + 12090^2 .

It is not a de Polignac number, because 2138094261 - 2¹⁸ = 2137832117 is a prime.

It is a super-2 number, since 2×2138094261² = 9142894137842272242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138094269) 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, 85731 + ... + 107823.

Almost surely, 2^2138094261 is an apocalyptic number.

It is an amenable number.

2138094261 is a deficient number, since it is larger than the sum of its proper divisors (950691127).

2138094261 is a wasteful number, since it uses less digits than its factorization.

2138094261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32852 (or 32849 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2138094261 is about 46239.5313665699. The cubic root of 2138094261 is about 1288.2760982138.

The spelling of 2138094261 in words is "two billion, one hundred thirty-eight million, ninety-four thousand, two hundred sixty-one".