1117907391 has 4 divisors (see below), whose sum is σ = 1490543192. Its totient is φ = 745271592.

The previous prime is 1117907359. The next prime is 1117907419. The reversal of 1117907391 is 1937097111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1117907391 - 2⁵ = 1117907359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1117907311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186317896 + ... + 186317901.

It is an arithmetic number, because the mean of its divisors is an integer number (372635798).

Almost surely, 2^1117907391 is an apocalyptic number.

1117907391 is a deficient number, since it is larger than the sum of its proper divisors (372635801).

1117907391 is an equidigital number, since it uses as much as digits as its factorization.

1117907391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372635800.

The product of its (nonzero) digits is 11907, while the sum is 39.

The square root of 1117907391 is about 33435.1221173185. The cubic root of 1117907391 is about 1037.8516397640.

The spelling of 1117907391 in words is "one billion, one hundred seventeen million, nine hundred seven thousand, three hundred ninety-one".