1118018256737 has 4 divisors (see below), whose sum is σ = 1121185447620. Its totient is φ = 1114851065856.

The previous prime is 1118018256727. The next prime is 1118018256739. The reversal of 1118018256737 is 7376528108111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 477696616336 + 640321640401 = 691156^2 + 800201^2 .

It is a cyclic number.

It is not a de Polignac number, because 1118018256737 - 2²⁸ = 1117749821281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1118018256739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1583594912 + ... + 1583595617.

It is an arithmetic number, because the mean of its divisors is an integer number (280296361905).

Almost surely, 2^{1118018256737} is an apocalyptic number.

It is an amenable number.

1118018256737 is a deficient number, since it is larger than the sum of its proper divisors (3167190883).

1118018256737 is an equidigital number, since it uses as much as digits as its factorization.

1118018256737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167190882.

The product of its (nonzero) digits is 564480, while the sum is 50.

The spelling of 1118018256737 in words is "one trillion, one hundred eighteen billion, eighteen million, two hundred fifty-six thousand, seven hundred thirty-seven".