149275919 has 16 divisors (see below), whose sum is σ = 166253472. Its totient is φ = 133152768.

The previous prime is 149275897. The next prime is 149275939. The reversal of 149275919 is 919572941.

149275919 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149275919 - 2⁸ = 149275663 is a prime.

It is a super-2 number, since 2×149275919² = 44566599986589122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149275939) 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, 52847 + ... + 55599.

It is an arithmetic number, because the mean of its divisors is an integer number (10390842).

Almost surely, 2^149275919 is an apocalyptic number.

149275919 is a deficient number, since it is larger than the sum of its proper divisors (16977553).

149275919 is a wasteful number, since it uses less digits than its factorization.

149275919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906.

The product of its digits is 204120, while the sum is 47.

The square root of 149275919 is about 12217.8524708723. The cubic root of 149275919 is about 530.4729598025.

The spelling of 149275919 in words is "one hundred forty-nine million, two hundred seventy-five thousand, nine hundred nineteen".