2138710185674 has 4 divisors (see below), whose sum is σ = 3208065278514. Its totient is φ = 1069355092836.

The previous prime is 2138710185659. The next prime is 2138710185691. The reversal of 2138710185674 is 4765810178312.

It is a happy number.

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., 1752936280225 + 385773905449 = 1323985^2 + 621107^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534677546417 + ... + 534677546420.

Almost surely, 2^{2138710185674} is an apocalyptic number.

2138710185674 is a deficient number, since it is larger than the sum of its proper divisors (1069355092840).

2138710185674 is a wasteful number, since it uses less digits than its factorization.

2138710185674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1069355092839.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 2138710185674 in words is "two trillion, one hundred thirty-eight billion, seven hundred ten million, one hundred eighty-five thousand, six hundred seventy-four".