149768593 has 4 divisors (see below), whose sum is σ = 161289268. Its totient is φ = 138247920.

The previous prime is 149768587. The next prime is 149768611. The reversal of 149768593 is 395867941.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 395867941 = 7 ⋅56552563.

It can be written as a sum of positive squares in 2 ways, for example, as 96668224 + 53100369 = 9832^2 + 7287^2 .

It is a cyclic number.

It is not a de Polignac number, because 149768593 - 2⁵ = 149768561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149768593.

It is not an unprimeable number, because it can be changed into a prime (149768503) 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 3 ways as a sum of consecutive naturals, for example, 5760318 + ... + 5760343.

It is an arithmetic number, because the mean of its divisors is an integer number (40322317).

Almost surely, 2^149768593 is an apocalyptic number.

149768593 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

149768593 is a deficient number, since it is larger than the sum of its proper divisors (11520675).

149768593 is a wasteful number, since it uses less digits than its factorization.

149768593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11520674.

The product of its digits is 1632960, while the sum is 52.

The square root of 149768593 is about 12237.9979163260. The cubic root of 149768593 is about 531.0559143752.

The spelling of 149768593 in words is "one hundred forty-nine million, seven hundred sixty-eight thousand, five hundred ninety-three".