165415970 has 16 divisors (see below), whose sum is σ = 299723328. Its totient is φ = 65727600.

The previous prime is 165415951. The next prime is 165415973. The reversal of 165415970 is 79514561.

It is not an unprimeable number, because it can be changed into a prime (165415973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53264 + ... + 56283.

It is an arithmetic number, because the mean of its divisors is an integer number (18732708).

Almost surely, 2^165415970 is an apocalyptic number.

165415970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165415970 is a deficient number, since it is larger than the sum of its proper divisors (134307358).

165415970 is a wasteful number, since it uses less digits than its factorization.

165415970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109705.

The product of its (nonzero) digits is 37800, while the sum is 38.

The square root of 165415970 is about 12861.4139969134. The cubic root of 165415970 is about 548.9411805779.

The spelling of 165415970 in words is "one hundred sixty-five million, four hundred fifteen thousand, nine hundred seventy".