149823945 has 32 divisors (see below), whose sum is σ = 266860800. Its totient is φ = 79754112.

The previous prime is 149823901. The next prime is 149823953. The reversal of 149823945 is 549328941.

It is not a de Polignac number, because 149823945 - 2⁸ = 149823689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 149823945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 132141 + ... + 133269.

It is an arithmetic number, because the mean of its divisors is an integer number (8339400).

Almost surely, 2^149823945 is an apocalyptic number.

149823945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149823945 is a deficient number, since it is larger than the sum of its proper divisors (117036855).

149823945 is a wasteful number, since it uses less digits than its factorization.

149823945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126 (or 2120 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 149823945 is about 12240.2591884322. The cubic root of 149823945 is about 531.1213294840.

The spelling of 149823945 in words is "one hundred forty-nine million, eight hundred twenty-three thousand, nine hundred forty-five".