19016149 has 8 divisors (see below), whose sum is σ = 20190168. Its totient is φ = 17848320.

The previous prime is 19016119. The next prime is 19016159. The reversal of 19016149 is 94161091.

It can be written as a sum of positive squares in 4 ways, for example, as 1249924 + 17766225 = 1118^2 + 4215^2 .

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 19016149 - 2⁵ = 19016117 is a prime.

It is a super-2 number, since 2×19016149² = 723227845580402, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19016149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19016119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5829 + ... + 8485.

It is an arithmetic number, because the mean of its divisors is an integer number (2523771).

Almost surely, 2^19016149 is an apocalyptic number.

It is an amenable number.

19016149 is a deficient number, since it is larger than the sum of its proper divisors (1174019).

19016149 is a wasteful number, since it uses less digits than its factorization.

19016149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 19016149 is about 4360.7509674367. The cubic root of 19016149 is about 266.9157434956.

The spelling of 19016149 in words is "nineteen million, sixteen thousand, one hundred forty-nine".