168377137 has 4 divisors (see below), whose sum is σ = 168520176. Its totient is φ = 168234100.

The previous prime is 168377123. The next prime is 168377189. The reversal of 168377137 is 731773861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168377137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168377093 and 168377102.

It is not an unprimeable number, because it can be changed into a prime (168077137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69739 + ... + 72112.

It is an arithmetic number, because the mean of its divisors is an integer number (42130044).

Almost surely, 2^168377137 is an apocalyptic number.

It is an amenable number.

168377137 is a deficient number, since it is larger than the sum of its proper divisors (143039).

168377137 is a wasteful number, since it uses less digits than its factorization.

168377137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143038.

The product of its digits is 148176, while the sum is 43.

The square root of 168377137 is about 12976.0216168131. The cubic root of 168377137 is about 552.1974205020.

The spelling of 168377137 in words is "one hundred sixty-eight million, three hundred seventy-seven thousand, one hundred thirty-seven".