164515401 has 8 divisors (see below), whose sum is σ = 243726560. Its totient is φ = 109676916.

The previous prime is 164515391. The next prime is 164515427. The reversal of 164515401 is 104515461.

164515401 is a `hidden beast` number, since 1 + 645 + 15 + 4 + 0 + 1 = 666.

164515401 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 164515401 - 2¹¹ = 164513353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 6093163 = 164515401 / (1 + 6 + 4 + 5 + 1 + 5 + 4 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164515451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3046555 + ... + 3046608.

It is an arithmetic number, because the mean of its divisors is an integer number (30465820).

Almost surely, 2^164515401 is an apocalyptic number.

It is an amenable number.

164515401 is a deficient number, since it is larger than the sum of its proper divisors (79211159).

164515401 is an equidigital number, since it uses as much as digits as its factorization.

164515401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093172 (or 6093166 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 164515401 is about 12826.3557178179. The cubic root of 164515401 is about 547.9431727973.

The spelling of 164515401 in words is "one hundred sixty-four million, five hundred fifteen thousand, four hundred one".