1118497538 has 4 divisors (see below), whose sum is σ = 1677746310. Its totient is φ = 559248768.

The previous prime is 1118497517. The next prime is 1118497547. The reversal of 1118497538 is 8357948111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8357948111 = 1907 ⋅4382773.

It can be written as a sum of positive squares in only one way, i.e., 930067009 + 188430529 = 30497^2 + 13727^2 .

It is a super-2 number, since 2×1118497538² = 2502073485024122888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1118497492 and 1118497501.

It is an unprimeable number.

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, 279624383 + ... + 279624386.

Almost surely, 2^1118497538 is an apocalyptic number.

1118497538 is a deficient number, since it is larger than the sum of its proper divisors (559248772).

1118497538 is an equidigital number, since it uses as much as digits as its factorization.

1118497538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559248771.

The product of its digits is 241920, while the sum is 47.

The square root of 1118497538 is about 33443.9462085442. The cubic root of 1118497538 is about 1038.0342360717.

The spelling of 1118497538 in words is "one billion, one hundred eighteen million, four hundred ninety-seven thousand, five hundred thirty-eight".