2231638499 has 2 divisors, whose sum is σ = 2231638500. Its totient is φ = 2231638498.

The previous prime is 2231638463. The next prime is 2231638529. The reversal of 2231638499 is 9948361322.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2231638499 - 2¹² = 2231634403 is a prime.

It is a super-3 number, since 3×2231638499³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2231638429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1115819249 + 1115819250.

It is an arithmetic number, because the mean of its divisors is an integer number (1115819250).

Almost surely, 2^2231638499 is an apocalyptic number.

2231638499 is a deficient number, since it is larger than the sum of its proper divisors (1).

2231638499 is an equidigital number, since it uses as much as digits as its factorization.

2231638499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 47.

The square root of 2231638499 is about 47240.2211997361. The cubic root of 2231638499 is about 1306.7964569885.

The spelling of 2231638499 in words is "two billion, two hundred thirty-one million, six hundred thirty-eight thousand, four hundred ninety-nine".