919202020001 has 4 divisors (see below), whose sum is σ = 919241529600. Its totient is φ = 919162510404.

The previous prime is 919202019979. The next prime is 919202020027. The reversal of 919202020001 is 100020202919.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 919202020001 - 2¹⁸ = 919201757857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (919202020301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19719881 + ... + 19766438.

It is an arithmetic number, because the mean of its divisors is an integer number (229810382400).

Almost surely, 2^919202020001 is an apocalyptic number.

It is an amenable number.

919202020001 is a deficient number, since it is larger than the sum of its proper divisors (39509599).

919202020001 is a wasteful number, since it uses less digits than its factorization.

919202020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39509598.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 919202020001 in words is "nine hundred nineteen billion, two hundred two million, twenty thousand, one".