164935438969 has 16 divisors (see below), whose sum is σ = 193434102400. Its totient is φ = 137689735680.

The previous prime is 164935438933. The next prime is 164935439021. The reversal of 164935438969 is 969834539461.

It is not a de Polignac number, because 164935438969 - 2⁷ = 164935438841 is a prime.

It is a super-2 number, since 2×164935438969² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164935438919) 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, 679992 + ... + 890089.

It is an arithmetic number, because the mean of its divisors is an integer number (12089631400).

Almost surely, 2^164935438969 is an apocalyptic number.

It is an amenable number.

164935438969 is a deficient number, since it is larger than the sum of its proper divisors (28498663431).

164935438969 is a wasteful number, since it uses less digits than its factorization.

164935438969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570480.

The product of its digits is 151165440, while the sum is 67.

The spelling of 164935438969 in words is "one hundred sixty-four billion, nine hundred thirty-five million, four hundred thirty-eight thousand, nine hundred sixty-nine".