2138327954 has 12 divisors (see below), whose sum is σ = 3731164254. Its totient is φ = 916426224.

The previous prime is 2138327941. The next prime is 2138327987. The reversal of 2138327954 is 4597238312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1892685025 + 245642929 = 43505^2 + 15673^2 .

It is a super-2 number, since 2×2138327954² = 9144892877715652232, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10909739 + ... + 10909934.

Almost surely, 2^2138327954 is an apocalyptic number.

2138327954 is a deficient number, since it is larger than the sum of its proper divisors (1592836300).

2138327954 is a wasteful number, since it uses less digits than its factorization.

2138327954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21819689 (or 21819682 counting only the distinct ones).

The product of its digits is 362880, while the sum is 44.

The square root of 2138327954 is about 46242.0582803145. The cubic root of 2138327954 is about 1288.3230325552.

The spelling of 2138327954 in words is "two billion, one hundred thirty-eight million, three hundred twenty-seven thousand, nine hundred fifty-four".