19493149 has 8 divisors (see below), whose sum is σ = 21042560. Its totient is φ = 17950896.

The previous prime is 19493119. The next prime is 19493161. The reversal of 19493149 is 94139491.

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 19493149 - 2⁷ = 19493021 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 (19493119) 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, 4792 + ... + 7870.

It is an arithmetic number, because the mean of its divisors is an integer number (2630320).

Almost surely, 2^19493149 is an apocalyptic number.

It is an amenable number.

19493149 is a deficient number, since it is larger than the sum of its proper divisors (1549411).

19493149 is a wasteful number, since it uses less digits than its factorization.

19493149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3579.

The product of its digits is 34992, while the sum is 40.

The square root of 19493149 is about 4415.1046420215. The cubic root of 19493149 is about 269.1291052116.

The spelling of 19493149 in words is "nineteen million, four hundred ninety-three thousand, one hundred forty-nine".