1011909394 has 16 divisors (see below), whose sum is σ = 1608016536. Its totient is φ = 475936000.

The previous prime is 1011909359. The next prime is 1011909401. The reversal of 1011909394 is 4939091101.

It can be written as a sum of positive squares in 4 ways, for example, as 968018769 + 43890625 = 31113^2 + 6625^2 .

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, 65844 + ... + 79744.

Almost surely, 2^1011909394 is an apocalyptic number.

1011909394 is a deficient number, since it is larger than the sum of its proper divisors (596107142).

1011909394 is a wasteful number, since it uses less digits than its factorization.

1011909394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16061.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 1011909394 is about 31810.5233216934. The cubic root of 1011909394 is about 1003.9541421519.

The spelling of 1011909394 in words is "one billion, eleven million, nine hundred nine thousand, three hundred ninety-four".