149644167 has 4 divisors (see below), whose sum is σ = 199525560. Its totient is φ = 99762776.

The previous prime is 149644151. The next prime is 149644189. The reversal of 149644167 is 761446941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 761446941 = 3 ⋅253815647.

It is a cyclic number.

It is not a de Polignac number, because 149644167 - 2⁴ = 149644151 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149644267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24940692 + ... + 24940697.

It is an arithmetic number, because the mean of its divisors is an integer number (49881390).

Almost surely, 2^149644167 is an apocalyptic number.

149644167 is a deficient number, since it is larger than the sum of its proper divisors (49881393).

149644167 is an equidigital number, since it uses as much as digits as its factorization.

149644167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49881392.

The product of its digits is 145152, while the sum is 42.

The square root of 149644167 is about 12232.9132670840. The cubic root of 149644167 is about 530.9088086101.

The spelling of 149644167 in words is "one hundred forty-nine million, six hundred forty-four thousand, one hundred sixty-seven".