149686983 has 12 divisors (see below), whose sum is σ = 216459360. Its totient is φ = 99678336.

The previous prime is 149686981. The next prime is 149687017. The reversal of 149686983 is 389686941.

It is not a de Polignac number, because 149686983 - 2¹ = 149686981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149686981) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 591 + ... + 17312.

It is an arithmetic number, because the mean of its divisors is an integer number (18038280).

Almost surely, 2^149686983 is an apocalyptic number.

149686983 is a deficient number, since it is larger than the sum of its proper divisors (66772377).

149686983 is a wasteful number, since it uses less digits than its factorization.

149686983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18838 (or 18835 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 149686983 is about 12234.6631747670. The cubic root of 149686983 is about 530.9594381010.

The spelling of 149686983 in words is "one hundred forty-nine million, six hundred eighty-six thousand, nine hundred eighty-three".