149645773 has 16 divisors (see below), whose sum is σ = 158456320. Its totient is φ = 141134400.

The previous prime is 149645761. The next prime is 149645803. The reversal of 149645773 is 377546941.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149645773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149646773) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226063 + ... + 226723.

It is an arithmetic number, because the mean of its divisors is an integer number (9903520).

Almost surely, 2^149645773 is an apocalyptic number.

It is an amenable number.

149645773 is a deficient number, since it is larger than the sum of its proper divisors (8810547).

149645773 is a wasteful number, since it uses less digits than its factorization.

149645773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 868.

The product of its digits is 635040, while the sum is 46.

The square root of 149645773 is about 12232.9789094889. The cubic root of 149645773 is about 530.9107078634.

The spelling of 149645773 in words is "one hundred forty-nine million, six hundred forty-five thousand, seven hundred seventy-three".