149505893 has 8 divisors (see below), whose sum is σ = 151156248. Its totient is φ = 147861504.

The previous prime is 149505869. The next prime is 149505943. The reversal of 149505893 is 398505941.

It is a happy number.

149505893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 13853284 + 135652609 = 3722^2 + 11647^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149505893 - 2¹⁰ = 149504869 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 (149505193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64055 + ... + 66347.

It is an arithmetic number, because the mean of its divisors is an integer number (18894531).

Almost surely, 2^149505893 is an apocalyptic number.

It is an amenable number.

149505893 is a deficient number, since it is larger than the sum of its proper divisors (1650355).

149505893 is a wasteful number, since it uses less digits than its factorization.

149505893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2983.

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 149505893 is about 12227.2602409534. The cubic root of 149505893 is about 530.7452350060.

The spelling of 149505893 in words is "one hundred forty-nine million, five hundred five thousand, eight hundred ninety-three".