19745969 has 8 divisors (see below), whose sum is σ = 20659968. Its totient is φ = 18852640.

The previous prime is 19745963. The next prime is 19746017. The reversal of 19745969 is 96954791.

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

It is not a de Polignac number, because 19745969 - 2⁴ = 19745953 is a prime.

It is a super-2 number, since 2×19745969² = 779806583497922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19745963) 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, 3197 + ... + 7050.

It is an arithmetic number, because the mean of its divisors is an integer number (2582496).

Almost surely, 2^19745969 is an apocalyptic number.

It is an amenable number.

19745969 is a deficient number, since it is larger than the sum of its proper divisors (913999).

19745969 is a wasteful number, since it uses less digits than its factorization.

19745969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10335.

The product of its digits is 612360, while the sum is 50.

The square root of 19745969 is about 4443.6436625814. The cubic root of 19745969 is about 270.2876176034.

The spelling of 19745969 in words is "nineteen million, seven hundred forty-five thousand, nine hundred sixty-nine".