165117370 has 32 divisors (see below), whose sum is σ = 326255040. Its totient is φ = 59667840.

The previous prime is 165117367. The next prime is 165117389. The reversal of 165117370 is 73711561.

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 15 ways as a sum of consecutive naturals, for example, 13326 + ... + 22534.

It is an arithmetic number, because the mean of its divisors is an integer number (10195470).

Almost surely, 2^165117370 is an apocalyptic number.

165117370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165117370 is a deficient number, since it is larger than the sum of its proper divisors (161137670).

165117370 is a wasteful number, since it uses less digits than its factorization.

165117370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9390.

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 165117370 is about 12849.8003875547. The cubic root of 165117370 is about 548.6106752765.

The spelling of 165117370 in words is "one hundred sixty-five million, one hundred seventeen thousand, three hundred seventy".