19190149 has 4 divisors (see below), whose sum is σ = 20934720. Its totient is φ = 17445580.

The previous prime is 19190123. The next prime is 19190159. The reversal of 19190149 is 94109191.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19190149 - 2¹⁵ = 19157381 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 (19190159) 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, 872269 + ... + 872290.

It is an arithmetic number, because the mean of its divisors is an integer number (5233680).

Almost surely, 2^19190149 is an apocalyptic number.

It is an amenable number.

19190149 is a deficient number, since it is larger than the sum of its proper divisors (1744571).

19190149 is a wasteful number, since it uses less digits than its factorization.

19190149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744570.

The product of its (nonzero) digits is 2916, while the sum is 34.

The square root of 19190149 is about 4380.6562293793. The cubic root of 19190149 is about 267.7273764763.

The spelling of 19190149 in words is "nineteen million, one hundred ninety thousand, one hundred forty-nine".