1090644194 has 16 divisors (see below), whose sum is σ = 1723697280. Its totient is φ = 516132720.

The previous prime is 1090644187. The next prime is 1090644223. The reversal of 1090644194 is 4914460901.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28904 + ... + 54924.

It is an arithmetic number, because the mean of its divisors is an integer number (107731080).

Almost surely, 2^1090644194 is an apocalyptic number.

1090644194 is a deficient number, since it is larger than the sum of its proper divisors (633053086).

1090644194 is a wasteful number, since it uses less digits than its factorization.

1090644194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27145.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1090644194 is about 33024.9026342244. The cubic root of 1090644194 is about 1029.3451689689.

The spelling of 1090644194 in words is "one billion, ninety million, six hundred forty-four thousand, one hundred ninety-four".