1108970661 has 4 divisors (see below), whose sum is σ = 1478627552. Its totient is φ = 739313772.

The previous prime is 1108970659. The next prime is 1108970699. The reversal of 1108970661 is 1660798011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1108970661 - 2¹ = 1108970659 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 (1108970641) 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, 184828441 + ... + 184828446.

It is an arithmetic number, because the mean of its divisors is an integer number (369656888).

Almost surely, 2^1108970661 is an apocalyptic number.

It is an amenable number.

1108970661 is a deficient number, since it is larger than the sum of its proper divisors (369656891).

1108970661 is an equidigital number, since it uses as much as digits as its factorization.

1108970661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369656890.

The product of its (nonzero) digits is 18144, while the sum is 39.

The square root of 1108970661 is about 33301.2111041025. The cubic root of 1108970661 is about 1035.0786535013.

The spelling of 1108970661 in words is "one billion, one hundred eight million, nine hundred seventy thousand, six hundred sixty-one".