1108394645 has 16 divisors (see below), whose sum is σ = 1456878960. Its totient is φ = 805776384.

The previous prime is 1108394641. The next prime is 1108394669. The reversal of 1108394645 is 5464938011.

It can be written as a sum of positive squares in 8 ways, for example, as 7349521 + 1101045124 = 2711^2 + 33182^2 .

It is a cyclic number.

It is not a de Polignac number, because 1108394645 - 2² = 1108394641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1108394641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222362 + ... + 227291.

It is an arithmetic number, because the mean of its divisors is an integer number (91054935).

Almost surely, 2^1108394645 is an apocalyptic number.

It is an amenable number.

1108394645 is a deficient number, since it is larger than the sum of its proper divisors (348484315).

1108394645 is a wasteful number, since it uses less digits than its factorization.

1108394645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449704.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1108394645 is about 33292.5614064163. The cubic root of 1108394645 is about 1034.8994106697.

The spelling of 1108394645 in words is "one billion, one hundred eight million, three hundred ninety-four thousand, six hundred forty-five".