1105644641 has 4 divisors (see below), whose sum is σ = 1120790532. Its totient is φ = 1090498752.

The previous prime is 1105644611. The next prime is 1105644647. The reversal of 1105644641 is 1464465011.

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 736851025 + 368793616 = 27145^2 + 19204^2 .

It is a cyclic number.

It is not a de Polignac number, because 1105644641 - 2¹⁴ = 1105628257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1105644598 and 1105644607.

It is not an unprimeable number, because it can be changed into a prime (1105644647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7572836 + ... + 7572981.

It is an arithmetic number, because the mean of its divisors is an integer number (280197633).

Almost surely, 2^1105644641 is an apocalyptic number.

It is an amenable number.

1105644641 is a deficient number, since it is larger than the sum of its proper divisors (15145891).

1105644641 is an equidigital number, since it uses as much as digits as its factorization.

1105644641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15145890.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1105644641 is about 33251.2351800651. The cubic root of 1105644641 is about 1034.0428161133.

The spelling of 1105644641 in words is "one billion, one hundred five million, six hundred forty-four thousand, six hundred forty-one".