164651955 has 16 divisors (see below), whose sum is σ = 283708320. Its totient is φ = 81059328.

The previous prime is 164651909. The next prime is 164651957. The reversal of 164651955 is 559156461.

164651955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 164651955 - 2¹² = 164647859 is a prime.

It is a super-3 number, since 3×164651955³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (164651957) 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, 421990 + ... + 422379.

It is an arithmetic number, because the mean of its divisors is an integer number (17731770).

Almost surely, 2^164651955 is an apocalyptic number.

164651955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

164651955 is a deficient number, since it is larger than the sum of its proper divisors (119056365).

164651955 is a wasteful number, since it uses less digits than its factorization.

164651955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844390.

The product of its digits is 162000, while the sum is 42.

The square root of 164651955 is about 12831.6777936480. The cubic root of 164651955 is about 548.0947353844.

The spelling of 164651955 in words is "one hundred sixty-four million, six hundred fifty-one thousand, nine hundred fifty-five".