1118740897 has 4 divisors (see below), whose sum is σ = 1119023280. Its totient is φ = 1118458516.

The previous prime is 1118740877. The next prime is 1118740937. The reversal of 1118740897 is 7980478111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7980478111 = 7583 ⋅1052417.

It is a cyclic number.

It is not a de Polignac number, because 1118740897 - 2¹⁹ = 1118216609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1118740807) 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 in 3 ways as a sum of consecutive naturals, for example, 135163 + ... + 143200.

It is an arithmetic number, because the mean of its divisors is an integer number (279755820).

Almost surely, 2^1118740897 is an apocalyptic number.

It is an amenable number.

1118740897 is a deficient number, since it is larger than the sum of its proper divisors (282383).

1118740897 is an equidigital number, since it uses as much as digits as its factorization.

1118740897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282382.

The product of its (nonzero) digits is 112896, while the sum is 46.

The square root of 1118740897 is about 33447.5843223393. The cubic root of 1118740897 is about 1038.1095146325.

The spelling of 1118740897 in words is "one billion, one hundred eighteen million, seven hundred forty thousand, eight hundred ninety-seven".