149245109 has 8 divisors (see below), whose sum is σ = 160980792. Its totient is φ = 137545920.

The previous prime is 149245099. The next prime is 149245127. The reversal of 149245109 is 901542941.

149245109 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 770884 + 148474225 = 878^2 + 12185^2 .

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 149245109 - 2⁴ = 149245093 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 (149245169) 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, 302 + ... + 17279.

It is an arithmetic number, because the mean of its divisors is an integer number (20122599).

Almost surely, 2^149245109 is an apocalyptic number.

It is an amenable number.

149245109 is a deficient number, since it is larger than the sum of its proper divisors (11735683).

149245109 is a wasteful number, since it uses less digits than its factorization.

149245109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18247.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 149245109 is about 12216.5915459264. The cubic root of 149245109 is about 530.4364614028.

The spelling of 149245109 in words is "one hundred forty-nine million, two hundred forty-five thousand, one hundred nine".