2138088188 has 24 divisors (see below), whose sum is σ = 3962620032. Its totient is φ = 1007298864.

The previous prime is 2138088137. The next prime is 2138088223. The reversal of 2138088188 is 8818808312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167270 + ... + 179597.

It is an arithmetic number, because the mean of its divisors is an integer number (165109168).

Almost surely, 2^2138088188 is an apocalyptic number.

It is an amenable number.

2138088188 is a deficient number, since it is larger than the sum of its proper divisors (1824531844).

2138088188 is a wasteful number, since it uses less digits than its factorization.

2138088188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346961 (or 346959 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 47.

The square root of 2138088188 is about 46239.4656976051. The cubic root of 2138088188 is about 1288.2748784814.

The spelling of 2138088188 in words is "two billion, one hundred thirty-eight million, eighty-eight thousand, one hundred eighty-eight".