19193961 has 8 divisors (see below), whose sum is σ = 25656160. Its totient is φ = 12763872.

The previous prime is 19193921. The next prime is 19194011. The reversal of 19193961 is 16939191.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19193961 - 2²¹ = 17096809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19193921) 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, 6595 + ... + 9048.

It is an arithmetic number, because the mean of its divisors is an integer number (3207020).

Almost surely, 2^19193961 is an apocalyptic number.

It is an amenable number.

19193961 is a deficient number, since it is larger than the sum of its proper divisors (6462199).

19193961 is a wasteful number, since it uses less digits than its factorization.

19193961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16055.

The product of its digits is 13122, while the sum is 39.

The square root of 19193961 is about 4381.0913024040. The cubic root of 19193961 is about 267.7451027446.

The spelling of 19193961 in words is "nineteen million, one hundred ninety-three thousand, nine hundred sixty-one".