164220154 has 16 divisors (see below), whose sum is σ = 296337600. Its totient is φ = 66675744.

The previous prime is 164220137. The next prime is 164220157. The reversal of 164220154 is 451022461.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (164220157) 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, 308419 + ... + 308950.

It is an arithmetic number, because the mean of its divisors is an integer number (18521100).

Almost surely, 2^164220154 is an apocalyptic number.

164220154 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

164220154 is a deficient number, since it is larger than the sum of its proper divisors (132117446).

164220154 is a wasteful number, since it uses less digits than its factorization.

164220154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617397.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 164220154 is about 12814.8411617156. The cubic root of 164220154 is about 547.6151884019.

The spelling of 164220154 in words is "one hundred sixty-four million, two hundred twenty thousand, one hundred fifty-four".