164998154 has 4 divisors (see below), whose sum is σ = 247497234. Its totient is φ = 82499076.

The previous prime is 164998111. The next prime is 164998199. The reversal of 164998154 is 451899461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 143161225 + 21836929 = 11965^2 + 4673^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 164998099 and 164998108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41249537 + ... + 41249540.

Almost surely, 2^164998154 is an apocalyptic number.

164998154 is a deficient number, since it is larger than the sum of its proper divisors (82499080).

164998154 is an equidigital number, since it uses as much as digits as its factorization.

164998154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82499079.

The product of its digits is 311040, while the sum is 47.

The square root of 164998154 is about 12845.1607230116. The cubic root of 164998154 is about 548.4786097906.

The spelling of 164998154 in words is "one hundred sixty-four million, nine hundred ninety-eight thousand, one hundred fifty-four".