1118528399 has 2 divisors, whose sum is σ = 1118528400. Its totient is φ = 1118528398.

The previous prime is 1118528371. The next prime is 1118528401. The reversal of 1118528399 is 9938258111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1118528399 is a prime.

It is a super-2 number, since 2×1118528399² = 2502211558739006402, which contains 22 as substring.

Together with 1118528401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1118525399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 559264199 + 559264200.

It is an arithmetic number, because the mean of its divisors is an integer number (559264200).

Almost surely, 2^1118528399 is an apocalyptic number.

1118528399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1118528399 is an equidigital number, since it uses as much as digits as its factorization.

1118528399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 47.

The square root of 1118528399 is about 33444.4075893115. The cubic root of 1118528399 is about 1038.0437829501.

The spelling of 1118528399 in words is "one billion, one hundred eighteen million, five hundred twenty-eight thousand, three hundred ninety-nine".