2688092138 has 16 divisors (see below), whose sum is σ = 4074061320. Its totient is φ = 1330108416.

The previous prime is 2688092117. The next prime is 2688092191. The reversal of 2688092138 is 8312908862.

It can be written as a sum of positive squares in 4 ways, for example, as 1604563249 + 1083528889 = 40057^2 + 32917^2 .

It is a super-2 number, since 2×2688092138² = 14451678684754822088, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2688092092 and 2688092101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144218 + ... + 161786.

Almost surely, 2^2688092138 is an apocalyptic number.

2688092138 is a deficient number, since it is larger than the sum of its proper divisors (1385969182).

2688092138 is a wasteful number, since it uses less digits than its factorization.

2688092138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18361.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 2688092138 is about 51846.8141547771. The cubic root of 2688092138 is about 1390.4265443873.

The spelling of 2688092138 in words is "two billion, six hundred eighty-eight million, ninety-two thousand, one hundred thirty-eight".