1099915794 has 16 divisors (see below), whose sum is σ = 2444257440. Its totient is φ = 366638580.

The previous prime is 1099915787. The next prime is 1099915801. The reversal of 1099915794 is 4975199901.

It is an interprime number because it is at equal distance from previous prime (1099915787) and next prime (1099915801).

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 20368811 = 1099915794 / (1 + 0 + 9 + 9 + 9 + 1 + 5 + 7 + 9 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 1099915794.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10184352 + ... + 10184459.

It is an arithmetic number, because the mean of its divisors is an integer number (152766090).

Almost surely, 2^1099915794 is an apocalyptic number.

1099915794 is an abundant number, since it is smaller than the sum of its proper divisors (1344341646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1099915794 is a wasteful number, since it uses less digits than its factorization.

1099915794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20368822 (or 20368816 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 54.

The square root of 1099915794 is about 33164.9784260445. The cubic root of 1099915794 is about 1032.2537741238.

The spelling of 1099915794 in words is "one billion, ninety-nine million, nine hundred fifteen thousand, seven hundred ninety-four".