149153803 has 4 divisors (see below), whose sum is σ = 153965248. Its totient is φ = 144342360.

The previous prime is 149153791. The next prime is 149153813. The reversal of 149153803 is 308351941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 308351941 = 257 ⋅1199813.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149153803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149153813) 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, 2405676 + ... + 2405737.

It is an arithmetic number, because the mean of its divisors is an integer number (38491312).

Almost surely, 2^149153803 is an apocalyptic number.

149153803 is a deficient number, since it is larger than the sum of its proper divisors (4811445).

149153803 is an equidigital number, since it uses as much as digits as its factorization.

149153803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4811444.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 149153803 is about 12212.8540071516. The cubic root of 149153803 is about 530.3282682167.

The spelling of 149153803 in words is "one hundred forty-nine million, one hundred fifty-three thousand, eight hundred three".