19442895 has 16 divisors (see below), whose sum is σ = 31229952. Its totient is φ = 10329120.

The previous prime is 19442881. The next prime is 19442939. The reversal of 19442895 is 59824491.

It is not a de Polignac number, because 19442895 - 2⁶ = 19442831 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1674 + ... + 6456.

It is an arithmetic number, because the mean of its divisors is an integer number (1951872).

Almost surely, 2^19442895 is an apocalyptic number.

19442895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19442895 is a deficient number, since it is larger than the sum of its proper divisors (11787057).

19442895 is a wasteful number, since it uses less digits than its factorization.

19442895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5062.

The product of its digits is 103680, while the sum is 42.

The square root of 19442895 is about 4409.4098244550. The cubic root of 19442895 is about 268.8976315247.

The spelling of 19442895 in words is "nineteen million, four hundred forty-two thousand, eight hundred ninety-five".