164235945 has 16 divisors (see below), whose sum is σ = 264116160. Its totient is φ = 87146304.

The previous prime is 164235941. The next prime is 164235949. The reversal of 164235945 is 549532461.

It is an interprime number because it is at equal distance from previous prime (164235941) and next prime (164235949).

It is not a de Polignac number, because 164235945 - 2² = 164235941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (164235941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24835 + ... + 30744.

It is an arithmetic number, because the mean of its divisors is an integer number (16507260).

Almost surely, 2^164235945 is an apocalyptic number.

164235945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164235945 is a deficient number, since it is larger than the sum of its proper divisors (99880215).

164235945 is a wasteful number, since it uses less digits than its factorization.

164235945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55784.

The product of its digits is 129600, while the sum is 39.

The square root of 164235945 is about 12815.4572684708. The cubic root of 164235945 is about 547.6327402757.

The spelling of 164235945 in words is "one hundred sixty-four million, two hundred thirty-five thousand, nine hundred forty-five".