1103639045 has 4 divisors (see below), whose sum is σ = 1324366860. Its totient is φ = 882911232.

The previous prime is 1103639027. The next prime is 1103639057. The reversal of 1103639045 is 5409363011.

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 278455969 + 825183076 = 16687^2 + 28726^2 .

It is a cyclic number.

It is not a de Polignac number, because 1103639045 - 2²⁶ = 1036530181 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110363900 + ... + 110363909.

It is an arithmetic number, because the mean of its divisors is an integer number (331091715).

Almost surely, 2^1103639045 is an apocalyptic number.

It is an amenable number.

1103639045 is a deficient number, since it is larger than the sum of its proper divisors (220727815).

1103639045 is an equidigital number, since it uses as much as digits as its factorization.

1103639045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220727814.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 1103639045 is about 33221.0632731705. The cubic root of 1103639045 is about 1033.4171999800.

The spelling of 1103639045 in words is "one billion, one hundred three million, six hundred thirty-nine thousand, forty-five".