149664194 has 16 divisors (see below), whose sum is σ = 227867640. Its totient is φ = 73716480.

The previous prime is 149664173. The next prime is 149664211. The reversal of 149664194 is 491466941.

149664194 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 71995225 + 77668969 = 8485^2 + 8813^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37562 + ... + 41354.

Almost surely, 2^149664194 is an apocalyptic number.

149664194 is a deficient number, since it is larger than the sum of its proper divisors (78203446).

149664194 is a wasteful number, since it uses less digits than its factorization.

149664194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4085.

The product of its digits is 186624, while the sum is 44.

The square root of 149664194 is about 12233.7318100406. The cubic root of 149664194 is about 530.9324915389.

The spelling of 149664194 in words is "one hundred forty-nine million, six hundred sixty-four thousand, one hundred ninety-four".