19902200001 has 4 divisors (see below), whose sum is σ = 26536266672. Its totient is φ = 13268133332.

The previous prime is 19902199973. The next prime is 19902200027. The reversal of 19902200001 is 10000220991.

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 19902200001 - 2²³ = 19893811393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19902200041) 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, 3317033331 + ... + 3317033336.

It is an arithmetic number, because the mean of its divisors is an integer number (6634066668).

Almost surely, 2^19902200001 is an apocalyptic number.

It is an amenable number.

19902200001 is a deficient number, since it is larger than the sum of its proper divisors (6634066671).

19902200001 is an equidigital number, since it uses as much as digits as its factorization.

19902200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6634066670.

The product of its (nonzero) digits is 324, while the sum is 24.

Adding to 19902200001 its reverse (10000220991), we get a palindrome (29902420992).

The spelling of 19902200001 in words is "nineteen billion, nine hundred two million, two hundred thousand, one".