1009211894 has 16 divisors (see below), whose sum is σ = 1583788032. Its totient is φ = 481397928.

The previous prime is 1009211869. The next prime is 1009211921. The reversal of 1009211894 is 4981129001.

It is a congruent number.

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, 11024 + ... + 46259.

It is an arithmetic number, because the mean of its divisors is an integer number (98986752).

Almost surely, 2^1009211894 is an apocalyptic number.

1009211894 is a deficient number, since it is larger than the sum of its proper divisors (574576138).

1009211894 is a wasteful number, since it uses less digits than its factorization.

1009211894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57691.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 1009211894 is about 31768.0955362452. The cubic root of 1009211894 is about 1003.0612505160.

The spelling of 1009211894 in words is "one billion, nine million, two hundred eleven thousand, eight hundred ninety-four".