7563231998 has 16 divisors (see below), whose sum is σ = 13647937920. Its totient is φ = 3070785816.

The previous prime is 7563231997. The next prime is 7563232021. The reversal of 7563231998 is 8991323657.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7563231997) 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 7 ways as a sum of consecutive naturals, for example, 14216336 + ... + 14216867.

It is an arithmetic number, because the mean of its divisors is an integer number (852996120).

Almost surely, 2^7563231998 is an apocalyptic number.

7563231998 is a deficient number, since it is larger than the sum of its proper divisors (6084705922).

7563231998 is a wasteful number, since it uses less digits than its factorization.

7563231998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28433231.

The product of its digits is 2449440, while the sum is 53.

The square root of 7563231998 is about 86966.8442453789. The cubic root of 7563231998 is about 1962.9194309164.

The spelling of 7563231998 in words is "seven billion, five hundred sixty-three million, two hundred thirty-one thousand, nine hundred ninety-eight".