1115901497 has 2 divisors, whose sum is σ = 1115901498. Its totient is φ = 1115901496.

The previous prime is 1115901473. The next prime is 1115901499. The reversal of 1115901497 is 7941095111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 947654656 + 168246841 = 30784^2 + 12971^2 .

It is a cyclic number.

It is not a de Polignac number, because 1115901497 - 2²⁸ = 847466041 is a prime.

Together with 1115901499, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1115901497.

It is not a weakly prime, because it can be changed into another prime (1115901499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557950748 + 557950749.

It is an arithmetic number, because the mean of its divisors is an integer number (557950749).

Almost surely, 2^1115901497 is an apocalyptic number.

It is an amenable number.

1115901497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115901497 is an equidigital number, since it uses as much as digits as its factorization.

1115901497 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11340, while the sum is 38.

The square root of 1115901497 is about 33405.1118393578. Note that the first 3 decimals coincide. The cubic root of 1115901497 is about 1037.2305189110.

The spelling of 1115901497 in words is "one billion, one hundred fifteen million, nine hundred one thousand, four hundred ninety-seven".