19223961 has 8 divisors (see below), whose sum is σ = 25802304. Its totient is φ = 12730800.

The previous prime is 19223947. The next prime is 19223983. The reversal of 19223961 is 16932291.

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

It is not a de Polignac number, because 19223961 - 2⁷ = 19223833 is a prime.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (19223921) 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, 20766 + ... + 21671.

It is an arithmetic number, because the mean of its divisors is an integer number (3225288).

Almost surely, 2^19223961 is an apocalyptic number.

It is an amenable number.

19223961 is a deficient number, since it is larger than the sum of its proper divisors (6578343).

19223961 is a wasteful number, since it uses less digits than its factorization.

19223961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42591.

The product of its digits is 5832, while the sum is 33.

The square root of 19223961 is about 4384.5137700776. The cubic root of 19223961 is about 267.8845245811.

The spelling of 19223961 in words is "nineteen million, two hundred twenty-three thousand, nine hundred sixty-one".