19964001 has 8 divisors (see below), whose sum is σ = 28184544. Its totient is φ = 12526400.

The previous prime is 19963981. The next prime is 19964029. The reversal of 19964001 is 10046991.

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

It is a cyclic number.

It is not a de Polignac number, because 19964001 - 2¹³ = 19955809 is a prime.

It is a super-2 number, since 2×19964001² = 797122671856002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19964001.

It is not an unprimeable number, because it can be changed into a prime (19964081) 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, 195675 + ... + 195776.

It is an arithmetic number, because the mean of its divisors is an integer number (3523068).

Almost surely, 2^19964001 is an apocalyptic number.

It is an amenable number.

19964001 is a deficient number, since it is larger than the sum of its proper divisors (8220543).

19964001 is a wasteful number, since it uses less digits than its factorization.

19964001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391471.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 19964001 is about 4468.1093316972. The cubic root of 19964001 is about 271.2788033151.

The spelling of 19964001 in words is "nineteen million, nine hundred sixty-four thousand, one".