1117537906 has 4 divisors (see below), whose sum is σ = 1676306862. Its totient is φ = 558768952.

The previous prime is 1117537903. The next prime is 1117537931. The reversal of 1117537906 is 6097357111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6097357111 = 12421 ⋅490891.

It can be written as a sum of positive squares in only one way, i.e., 791915881 + 325622025 = 28141^2 + 18045^2 .

It is not an unprimeable number, because it can be changed into a prime (1117537901) 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, 279384475 + ... + 279384478.

Almost surely, 2^1117537906 is an apocalyptic number.

1117537906 is a deficient number, since it is larger than the sum of its proper divisors (558768956).

1117537906 is an equidigital number, since it uses as much as digits as its factorization.

1117537906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558768955.

The product of its (nonzero) digits is 39690, while the sum is 40.

The square root of 1117537906 is about 33429.5962584055. The cubic root of 1117537906 is about 1037.7372853695.

The spelling of 1117537906 in words is "one billion, one hundred seventeen million, five hundred thirty-seven thousand, nine hundred six".