19442961 has 12 divisors (see below), whose sum is σ = 28134288. Its totient is φ = 12938904.

The previous prime is 19442959. The next prime is 19442977. The reversal of 19442961 is 16924491.

It is a happy number.

It is not a de Polignac number, because 19442961 - 2¹ = 19442959 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19442461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4566 + ... + 7728.

It is an arithmetic number, because the mean of its divisors is an integer number (2344524).

Almost surely, 2^19442961 is an apocalyptic number.

It is an amenable number.

19442961 is a deficient number, since it is larger than the sum of its proper divisors (8691327).

19442961 is a wasteful number, since it uses less digits than its factorization.

19442961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3852 (or 3849 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 19442961 is about 4409.4173084434. The cubic root of 19442961 is about 268.8979357871.

The spelling of 19442961 in words is "nineteen million, four hundred forty-two thousand, nine hundred sixty-one".