19933049 has 4 divisors (see below), whose sum is σ = 19944036. Its totient is φ = 19922064.

The previous prime is 19933013. The next prime is 19933073. The reversal of 19933049 is 94033991.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 94033991 = 43 ⋅2186837.

It can be written as a sum of positive squares in 2 ways, for example, as 2999824 + 16933225 = 1732^2 + 4115^2 .

It is a cyclic number.

It is not a de Polignac number, because 19933049 - 2⁸ = 19932793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19933009) 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, 2054 + ... + 6639.

It is an arithmetic number, because the mean of its divisors is an integer number (4986009).

Almost surely, 2^19933049 is an apocalyptic number.

It is an amenable number.

19933049 is a deficient number, since it is larger than the sum of its proper divisors (10987).

19933049 is an equidigital number, since it uses as much as digits as its factorization.

19933049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10986.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 19933049 is about 4464.6443307390. The cubic root of 19933049 is about 271.1385347619.

The spelling of 19933049 in words is "nineteen million, nine hundred thirty-three thousand, forty-nine".