164225019 has 12 divisors (see below), whose sum is σ = 254716584. Its totient is φ = 93842784.

The previous prime is 164224997. The next prime is 164225023. The reversal of 164225019 is 910522461.

It is not a de Polignac number, because 164225019 - 2⁵ = 164224987 is a prime.

It is a super-2 number, since 2×164225019² = 53939713731100722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164225029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 558442 + ... + 558735.

It is an arithmetic number, because the mean of its divisors is an integer number (21226382).

Almost surely, 2^164225019 is an apocalyptic number.

164225019 is a deficient number, since it is larger than the sum of its proper divisors (90491565).

164225019 is a wasteful number, since it uses less digits than its factorization.

164225019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117194 (or 1117187 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 164225019 is about 12815.0309792837. The cubic root of 164225019 is about 547.6205960239.

The spelling of 164225019 in words is "one hundred sixty-four million, two hundred twenty-five thousand, nineteen".