137871166 has 4 divisors (see below), whose sum is σ = 206806752. Its totient is φ = 68935582.

The previous prime is 137871109. The next prime is 137871169. The reversal of 137871166 is 661178731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661178731 = 601 ⋅1100131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (137871169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34467790 + ... + 34467793.

It is an arithmetic number, because the mean of its divisors is an integer number (51701688).

Almost surely, 2^137871166 is an apocalyptic number.

137871166 is a deficient number, since it is larger than the sum of its proper divisors (68935586).

137871166 is an equidigital number, since it uses as much as digits as its factorization.

137871166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68935585.

The product of its digits is 42336, while the sum is 40.

The square root of 137871166 is about 11741.8553048485. The cubic root of 137871166 is about 516.6040614165.

The spelling of 137871166 in words is "one hundred thirty-seven million, eight hundred seventy-one thousand, one hundred sixty-six".