2164292138 has 4 divisors (see below), whose sum is σ = 3246438210. Its totient is φ = 1082146068.

The previous prime is 2164292129. The next prime is 2164292159. The reversal of 2164292138 is 8312924612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1180403449 + 983888689 = 34357^2 + 31367^2 .

It is a super-2 number, since 2×2164292138² = 9368320917217222088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 541073033 + ... + 541073036.

Almost surely, 2^2164292138 is an apocalyptic number.

2164292138 is a deficient number, since it is larger than the sum of its proper divisors (1082146072).

2164292138 is a wasteful number, since it uses less digits than its factorization.

2164292138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082146071.

The product of its digits is 41472, while the sum is 38.

The square root of 2164292138 is about 46521.9532908927. The cubic root of 2164292138 is about 1293.5164633488.

The spelling of 2164292138 in words is "two billion, one hundred sixty-four million, two hundred ninety-two thousand, one hundred thirty-eight".