149646238 has 16 divisors (see below), whose sum is σ = 264812544. Its totient is φ = 62065080.

The previous prime is 149646227. The next prime is 149646247. The reversal of 149646238 is 832646941.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 149646194 and 149646203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171970 + ... + 172837.

It is an arithmetic number, because the mean of its divisors is an integer number (16550784).

Almost surely, 2^149646238 is an apocalyptic number.

149646238 is a deficient number, since it is larger than the sum of its proper divisors (115166306).

149646238 is a wasteful number, since it uses less digits than its factorization.

149646238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344847.

The product of its digits is 248832, while the sum is 43.

The square root of 149646238 is about 12232.9979154744. The cubic root of 149646238 is about 530.9112577691.

The spelling of 149646238 in words is "one hundred forty-nine million, six hundred forty-six thousand, two hundred thirty-eight".