1118497539 has 4 divisors (see below), whose sum is σ = 1491330056. Its totient is φ = 745665024.

The previous prime is 1118497517. The next prime is 1118497547. The reversal of 1118497539 is 9357948111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9357948111 = 3 ⋅3119316037.

It is not a de Polignac number, because 1118497539 - 2¹² = 1118493443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1118490539) 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, 186416254 + ... + 186416259.

It is an arithmetic number, because the mean of its divisors is an integer number (372832514).

Almost surely, 2^1118497539 is an apocalyptic number.

1118497539 is a deficient number, since it is larger than the sum of its proper divisors (372832517).

1118497539 is an equidigital number, since it uses as much as digits as its factorization.

1118497539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372832516.

The product of its digits is 272160, while the sum is 48.

The square root of 1118497539 is about 33443.9462234946. The cubic root of 1118497539 is about 1038.0342363810.

The spelling of 1118497539 in words is "one billion, one hundred eighteen million, four hundred ninety-seven thousand, five hundred thirty-nine".