164047090 has 8 divisors (see below), whose sum is σ = 295284780. Its totient is φ = 65618832.

The previous prime is 164047073. The next prime is 164047097. The reversal of 164047090 is 90740461.

164047090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 148766809 + 15280281 = 12197^2 + 3909^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×164047090² = 53822895474936200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (164047097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8202345 + ... + 8202364.

Almost surely, 2^164047090 is an apocalyptic number.

164047090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164047090 is a deficient number, since it is larger than the sum of its proper divisors (131237690).

164047090 is a wasteful number, since it uses less digits than its factorization.

164047090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16404716.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 164047090 is about 12808.0868985185. The cubic root of 164047090 is about 547.4227520408.

The spelling of 164047090 in words is "one hundred sixty-four million, forty-seven thousand, ninety".