144405166 has 4 divisors (see below), whose sum is σ = 216607752. Its totient is φ = 72202582.

The previous prime is 144405139. The next prime is 144405193. The reversal of 144405166 is 661504441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 661504441 = 13 ⋅50884957.

It is an interprime number because it is at equal distance from previous prime (144405139) and next prime (144405193).

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36101290 + ... + 36101293.

It is an arithmetic number, because the mean of its divisors is an integer number (54151938).

Almost surely, 2^144405166 is an apocalyptic number.

144405166 is a deficient number, since it is larger than the sum of its proper divisors (72202586).

144405166 is an equidigital number, since it uses as much as digits as its factorization.

144405166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72202585.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 144405166 is about 12016.8700583804. The cubic root of 144405166 is about 524.6394089265.

The spelling of 144405166 in words is "one hundred forty-four million, four hundred five thousand, one hundred sixty-six".