149309193 has 8 divisors (see below), whose sum is σ = 217177056. Its totient is φ = 90490400.

The previous prime is 149309161. The next prime is 149309203. The reversal of 149309193 is 391903941.

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

It is not a de Polignac number, because 149309193 - 2⁵ = 149309161 is a prime.

It is a super-2 number, since 2×149309193² = 44586470228622498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149309593) 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, 2262228 + ... + 2262293.

It is an arithmetic number, because the mean of its divisors is an integer number (27147132).

Almost surely, 2^149309193 is an apocalyptic number.

It is an amenable number.

149309193 is a deficient number, since it is larger than the sum of its proper divisors (67867863).

149309193 is a wasteful number, since it uses less digits than its factorization.

149309193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524535.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 149309193 is about 12219.2140909307. The cubic root of 149309193 is about 530.5123714863.

The spelling of 149309193 in words is "one hundred forty-nine million, three hundred nine thousand, one hundred ninety-three".