149349503 has 4 divisors (see below), whose sum is σ = 152527200. Its totient is φ = 146171808.

The previous prime is 149349479. The next prime is 149349521. The reversal of 149349503 is 305943941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 305943941 = 1201 ⋅254741.

It is a cyclic number.

It is not a de Polignac number, because 149349503 - 2⁶ = 149349439 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 (149349553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1588778 + ... + 1588871.

It is an arithmetic number, because the mean of its divisors is an integer number (38131800).

Almost surely, 2^149349503 is an apocalyptic number.

149349503 is a deficient number, since it is larger than the sum of its proper divisors (3177697).

149349503 is an equidigital number, since it uses as much as digits as its factorization.

149349503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3177696.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 149349503 is about 12220.8634310347. The cubic root of 149349503 is about 530.5601091798.

The spelling of 149349503 in words is "one hundred forty-nine million, three hundred forty-nine thousand, five hundred three".