19423001 has 12 divisors (see below), whose sum is σ = 21158460. Its totient is φ = 17821440.

The previous prime is 19422983. The next prime is 19423013. The reversal of 19423001 is 10032491.

It can be written as a sum of positive squares in 6 ways, for example, as 63001 + 19360000 = 251^2 + 4400^2 .

It is a de Polignac number, because none of the positive numbers 2^k-19423001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19423031) 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, 47285 + ... + 47693.

It is an arithmetic number, because the mean of its divisors is an integer number (1763205).

Almost surely, 2^19423001 is an apocalyptic number.

It is an amenable number.

19423001 is a deficient number, since it is larger than the sum of its proper divisors (1735459).

19423001 is a wasteful number, since it uses less digits than its factorization.

19423001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 19423001 is about 4407.1533896609. The cubic root of 19423001 is about 268.8058880705.

Adding to 19423001 its reverse (10032491), we get a palindrome (29455492).

The spelling of 19423001 in words is "nineteen million, four hundred twenty-three thousand, one".