164995020 has 72 divisors (see below), whose sum is σ = 516647040. Its totient is φ = 42577920.

The previous prime is 164995009. The next prime is 164995021. The reversal of 164995020 is 20599461.

164995020 is a `hidden beast` number, since 1 + 64 + 99 + 502 + 0 = 666.

It is a super-4 number, since 4×164995020⁴ (a number of 34 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (164995021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9205 + ... + 20364.

Almost surely, 2^164995020 is an apocalyptic number.

164995020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164995020 is an abundant number, since it is smaller than the sum of its proper divisors (351652020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164995020 is a wasteful number, since it uses less digits than its factorization.

164995020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29615 (or 29610 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 164995020 is about 12845.0387309654. The cubic root of 164995020 is about 548.4751371399.

It can be divided in two parts, 1649 and 95020, that added together give a palindrome (96669).

The spelling of 164995020 in words is "one hundred sixty-four million, nine hundred ninety-five thousand, twenty".