2138187475 has 12 divisors (see below), whose sum is σ = 2652316600. Its totient is φ = 1709928000.

The previous prime is 2138187437. The next prime is 2138187547. The reversal of 2138187475 is 5747818312.

It is not a de Polignac number, because 2138187475 - 2⁷ = 2138187347 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 62200 + ... + 90250.

Almost surely, 2^2138187475 is an apocalyptic number.

2138187475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2138187475 is a deficient number, since it is larger than the sum of its proper divisors (514129125).

2138187475 is a wasteful number, since it uses less digits than its factorization.

2138187475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31110 (or 31105 counting only the distinct ones).

The product of its digits is 376320, while the sum is 46.

The square root of 2138187475 is about 46240.5393026509. The cubic root of 2138187475 is about 1288.2948194999.

The spelling of 2138187475 in words is "two billion, one hundred thirty-eight million, one hundred eighty-seven thousand, four hundred seventy-five".