164474890 has 32 divisors (see below), whose sum is σ = 303860160. Its totient is φ = 64076544.

The previous prime is 164474873. The next prime is 164474897. The reversal of 164474890 is 98474461.

It is not an unprimeable number, because it can be changed into a prime (164474897) 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, 65437 + ... + 67903.

It is an arithmetic number, because the mean of its divisors is an integer number (9495630).

Almost surely, 2^164474890 is an apocalyptic number.

164474890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164474890 is a deficient number, since it is larger than the sum of its proper divisors (139385270).

164474890 is a wasteful number, since it uses less digits than its factorization.

164474890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2646.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 164474890 is about 12824.7764113064. The cubic root of 164474890 is about 547.8981931216.

The spelling of 164474890 in words is "one hundred sixty-four million, four hundred seventy-four thousand, eight hundred ninety".