1117403491 has 2 divisors, whose sum is σ = 1117403492. Its totient is φ = 1117403490.

The previous prime is 1117403479. The next prime is 1117403527. The reversal of 1117403491 is 1943047111.

It is a weak prime.

It is an emirp because it is prime and its reverse (1943047111) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1117403491 is a prime.

It is not a weakly prime, because it can be changed into another prime (1117403191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 558701745 + 558701746.

It is an arithmetic number, because the mean of its divisors is an integer number (558701746).

Almost surely, 2^1117403491 is an apocalyptic number.

1117403491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1117403491 is an equidigital number, since it uses as much as digits as its factorization.

1117403491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 1117403491 is about 33427.5857788145. The cubic root of 1117403491 is about 1037.6956781157.

The spelling of 1117403491 in words is "one billion, one hundred seventeen million, four hundred three thousand, four hundred ninety-one".