149817945 has 16 divisors (see below), whose sum is σ = 252325440. Its totient is φ = 75697344.

The previous prime is 149817937. The next prime is 149817959. The reversal of 149817945 is 549718941.

It is not a de Polignac number, because 149817945 - 2³ = 149817937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149817894 and 149817903.

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 15 ways as a sum of consecutive naturals, for example, 262554 + ... + 263123.

It is an arithmetic number, because the mean of its divisors is an integer number (15770340).

Almost surely, 2^149817945 is an apocalyptic number.

149817945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149817945 is a deficient number, since it is larger than the sum of its proper divisors (102507495).

149817945 is a wasteful number, since it uses less digits than its factorization.

149817945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525704.

The product of its digits is 362880, while the sum is 48.

The square root of 149817945 is about 12240.0140931291. The cubic root of 149817945 is about 531.1142394502.

The spelling of 149817945 in words is "one hundred forty-nine million, eight hundred seventeen thousand, nine hundred forty-five".