1103412661 has 12 divisors (see below), whose sum is σ = 1195794468. Its totient is φ = 1017704064.

The previous prime is 1103412599. The next prime is 1103412683. The reversal of 1103412661 is 1662143011.

It can be written as a sum of positive squares in 6 ways, for example, as 9060100 + 1094352561 = 3010^2 + 33081^2 .

It is not a de Polignac number, because 1103412661 - 2⁷ = 1103412533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103412691) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321591 + ... + 325003.

It is an arithmetic number, because the mean of its divisors is an integer number (99649539).

Almost surely, 2^1103412661 is an apocalyptic number.

It is an amenable number.

1103412661 is a deficient number, since it is larger than the sum of its proper divisors (92381807).

1103412661 is a wasteful number, since it uses less digits than its factorization.

1103412661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5352 (or 5339 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1103412661 is about 33217.6558625078. The cubic root of 1103412661 is about 1033.3465352343.

Adding to 1103412661 its reverse (1662143011), we get a palindrome (2765555672).

The spelling of 1103412661 in words is "one billion, one hundred three million, four hundred twelve thousand, six hundred sixty-one".