1103543138 has 4 divisors (see below), whose sum is σ = 1655314710. Its totient is φ = 551771568.

The previous prime is 1103543137. The next prime is 1103543171. The reversal of 1103543138 is 8313453011.

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

It can be written as a sum of positive squares in only one way, i.e., 1092500809 + 11042329 = 33053^2 + 3323^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1103543138.

It is not an unprimeable number, because it can be changed into a prime (1103543137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275885783 + ... + 275885786.

Almost surely, 2^1103543138 is an apocalyptic number.

1103543138 is a deficient number, since it is larger than the sum of its proper divisors (551771572).

1103543138 is an equidigital number, since it uses as much as digits as its factorization.

1103543138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551771571.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1103543138 is about 33219.6197750667. The cubic root of 1103543138 is about 1033.3872642219.

Adding to 1103543138 its reverse (8313453011), we get a palindrome (9416996149).

The spelling of 1103543138 in words is "one billion, one hundred three million, five hundred forty-three thousand, one hundred thirty-eight".