19316149 has 4 divisors (see below), whose sum is σ = 19507500. Its totient is φ = 19124800.

The previous prime is 19316147. The next prime is 19316161. The reversal of 19316149 is 94161391.

It is a happy number.

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 15288100 + 4028049 = 3910^2 + 2007^2 .

It is a cyclic number.

It is not a de Polignac number, because 19316149 - 2¹ = 19316147 is a prime.

It is a super-2 number, since 2×19316149² = 746227224380402, 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 (19316147) 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, 95524 + ... + 95725.

It is an arithmetic number, because the mean of its divisors is an integer number (4876875).

Almost surely, 2^19316149 is an apocalyptic number.

It is an amenable number.

19316149 is a deficient number, since it is larger than the sum of its proper divisors (191351).

19316149 is a wasteful number, since it uses less digits than its factorization.

19316149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191350.

The product of its digits is 5832, while the sum is 34.

The square root of 19316149 is about 4395.0141069171. The cubic root of 19316149 is about 268.3120529742.

The spelling of 19316149 in words is "nineteen million, three hundred sixteen thousand, one hundred forty-nine".