164191404 has 48 divisors (see below), whose sum is σ = 413411040. Its totient is φ = 50419200.

The previous prime is 164191333. The next prime is 164191427. The reversal of 164191404 is 404191461.

164191404 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125554 + ... + 126854.

It is an arithmetic number, because the mean of its divisors is an integer number (8612730).

Almost surely, 2^164191404 is an apocalyptic number.

It is an amenable number.

164191404 is an abundant number, since it is smaller than the sum of its proper divisors (249219636).

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

164191404 is a wasteful number, since it uses less digits than its factorization.

164191404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130 (or 2128 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 164191404 is about 12813.7193663667. The cubic root of 164191404 is about 547.5832295646.

The spelling of 164191404 in words is "one hundred sixty-four million, one hundred ninety-one thousand, four hundred four".