1118267047 has 4 divisors (see below), whose sum is σ = 1118813800. Its totient is φ = 1117720296.

The previous prime is 1118267039. The next prime is 1118267053. The reversal of 1118267047 is 7407628111.

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

It is a cyclic number.

It is not a de Polignac number, because 1118267047 - 2³ = 1118267039 is a prime.

It is a super-2 number, since 2×1118267047² = 2501042376812200418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1118266997 and 1118267015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118267077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270297 + ... + 274402.

It is an arithmetic number, because the mean of its divisors is an integer number (279703450).

Almost surely, 2^1118267047 is an apocalyptic number.

1118267047 is a deficient number, since it is larger than the sum of its proper divisors (546753).

1118267047 is an equidigital number, since it uses as much as digits as its factorization.

1118267047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546752.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 1118267047 is about 33440.5001009255. The cubic root of 1118267047 is about 1037.9629279172.

The spelling of 1118267047 in words is "one billion, one hundred eighteen million, two hundred sixty-seven thousand, forty-seven".