149381845 has 16 divisors (see below), whose sum is σ = 181444608. Its totient is φ = 118056960.

The previous prime is 149381831. The next prime is 149381861. The reversal of 149381845 is 548183941.

It is a de Polignac number, because none of the positive numbers 2^k-149381845 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232725 + ... + 233365.

It is an arithmetic number, because the mean of its divisors is an integer number (11340288).

Almost surely, 2^149381845 is an apocalyptic number.

It is an amenable number.

149381845 is a deficient number, since it is larger than the sum of its proper divisors (32062763).

149381845 is a wasteful number, since it uses less digits than its factorization.

149381845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140.

The product of its digits is 138240, while the sum is 43.

The square root of 149381845 is about 12222.1865883319. The cubic root of 149381845 is about 530.5984044452.

It can be divided in two parts, 1493 and 81845, that added together give a palindrome (83338).

The spelling of 149381845 in words is "one hundred forty-nine million, three hundred eighty-one thousand, eight hundred forty-five".