149494549 has 16 divisors (see below), whose sum is σ = 165739392. Its totient is φ = 134120448.

The previous prime is 149494511. The next prime is 149494561. The reversal of 149494549 is 945494941.

It is a cyclic number.

It is not a de Polignac number, because 149494549 - 2¹¹ = 149492501 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149494589) 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 15 ways as a sum of consecutive naturals, for example, 168862 + ... + 169744.

It is an arithmetic number, because the mean of its divisors is an integer number (10358712).

Almost surely, 2^149494549 is an apocalyptic number.

It is an amenable number.

149494549 is a deficient number, since it is larger than the sum of its proper divisors (16244843).

149494549 is a wasteful number, since it uses less digits than its factorization.

149494549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356.

The product of its digits is 933120, while the sum is 49.

The square root of 149494549 is about 12226.7963506390. The cubic root of 149494549 is about 530.7318109504.

The spelling of 149494549 in words is "one hundred forty-nine million, four hundred ninety-four thousand, five hundred forty-nine".