1103274644 has 12 divisors (see below), whose sum is σ = 1936462164. Its totient is φ = 549999744.

The previous prime is 1103274643. The next prime is 1103274661. The reversal of 1103274644 is 4464723011.

It can be written as a sum of positive squares in 2 ways, for example, as 634032400 + 469242244 = 25180^2 + 21662^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1103274644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103274643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 407879 + ... + 410574.

It is an arithmetic number, because the mean of its divisors is an integer number (161371847).

Almost surely, 2^1103274644 is an apocalyptic number.

It is an amenable number.

1103274644 is a deficient number, since it is larger than the sum of its proper divisors (833187520).

1103274644 is a wasteful number, since it uses less digits than its factorization.

1103274644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818794 (or 818792 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 1103274644 is about 33215.5783330653. The cubic root of 1103274644 is about 1033.3034491068.

Adding to 1103274644 its reverse (4464723011), we get a palindrome (5567997655).

The spelling of 1103274644 in words is "one billion, one hundred three million, two hundred seventy-four thousand, six hundred forty-four".