164243554 has 8 divisors (see below), whose sum is σ = 249333840. Its totient is φ = 81132276.

The previous prime is 164243539. The next prime is 164243567. The reversal of 164243554 is 455342461.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494544 + ... + 494875.

It is an arithmetic number, because the mean of its divisors is an integer number (31166730).

Almost surely, 2^164243554 is an apocalyptic number.

164243554 is a deficient number, since it is larger than the sum of its proper divisors (85090286).

164243554 is an equidigital number, since it uses as much as digits as its factorization.

164243554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989504.

The product of its digits is 57600, while the sum is 34.

The square root of 164243554 is about 12815.7541330973. The cubic root of 164243554 is about 547.6411973630.

The spelling of 164243554 in words is "one hundred sixty-four million, two hundred forty-three thousand, five hundred fifty-four".