18963207941 has 4 divisors (see below), whose sum is σ = 18965718252. Its totient is φ = 18960697632.

The previous prime is 18963207931. The next prime is 18963207943. The reversal of 18963207941 is 14970236981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10215347041 + 8747860900 = 101071^2 + 93530^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18963207941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18963207941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18963207943) 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, 1243790 + ... + 1258943.

It is an arithmetic number, because the mean of its divisors is an integer number (4741429563).

Almost surely, 2^18963207941 is an apocalyptic number.

It is an amenable number.

18963207941 is a deficient number, since it is larger than the sum of its proper divisors (2510311).

18963207941 is an equidigital number, since it uses as much as digits as its factorization.

18963207941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2510310.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 18963207941 in words is "eighteen billion, nine hundred sixty-three million, two hundred seven thousand, nine hundred forty-one".