16140149 has 4 divisors (see below), whose sum is σ = 16210860. Its totient is φ = 16069440.

The previous prime is 16140133. The next prime is 16140151. The reversal of 16140149 is 94104161.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15547249 + 592900 = 3943^2 + 770^2 .

It is a cyclic number.

It is not a de Polignac number, because 16140149 - 2⁴ = 16140133 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 (16740149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35012 + ... + 35469.

It is an arithmetic number, because the mean of its divisors is an integer number (4052715).

Almost surely, 2^16140149 is an apocalyptic number.

It is an amenable number.

16140149 is a deficient number, since it is larger than the sum of its proper divisors (70711).

16140149 is an equidigital number, since it uses as much as digits as its factorization.

16140149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70710.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 16140149 is about 4017.4804293238. The cubic root of 16140149 is about 252.7178083378.

The spelling of 16140149 in words is "sixteen million, one hundred forty thousand, one hundred forty-nine".