219802001 has 4 divisors (see below), whose sum is σ = 220030272. Its totient is φ = 219573732.

The previous prime is 219801977. The next prime is 219802003. The reversal of 219802001 is 100208912.

219802001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 219802001 - 2¹⁸ = 219539857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (219802003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112685 + ... + 114618.

It is an arithmetic number, because the mean of its divisors is an integer number (55007568).

Almost surely, 2^219802001 is an apocalyptic number.

It is an amenable number.

219802001 is a deficient number, since it is larger than the sum of its proper divisors (228271).

219802001 is an equidigital number, since it uses as much as digits as its factorization.

219802001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228270.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 219802001 is about 14825.7209268217. The cubic root of 219802001 is about 603.4999159144.

The spelling of 219802001 in words is "two hundred nineteen million, eight hundred two thousand, one".