1101630445 has 4 divisors (see below), whose sum is σ = 1321956540. Its totient is φ = 881304352.

The previous prime is 1101630427. The next prime is 1101630451. The reversal of 1101630445 is 5440361011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5440361011 = 68099 ⋅79889.

It can be written as a sum of positive squares in 2 ways, for example, as 862185769 + 239444676 = 29363^2 + 15474^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101630445 - 2²³ = 1093241837 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, 110163040 + ... + 110163049.

It is an arithmetic number, because the mean of its divisors is an integer number (330489135).

Almost surely, 2^1101630445 is an apocalyptic number.

It is an amenable number.

1101630445 is a deficient number, since it is larger than the sum of its proper divisors (220326095).

1101630445 is an equidigital number, since it uses as much as digits as its factorization.

1101630445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220326094.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1101630445 is about 33190.8186852931. The cubic root of 1101630445 is about 1032.7898866904.

Adding to 1101630445 its reverse (5440361011), we get a palindrome (6541991456).

The spelling of 1101630445 in words is "one billion, one hundred one million, six hundred thirty thousand, four hundred forty-five".