1009192012 has 24 divisors (see below), whose sum is σ = 1896320160. Its totient is φ = 468222720.

The previous prime is 1009191971. The next prime is 1009192013. The reversal of 1009192012 is 2102919001.

It is not an unprimeable number, because it can be changed into a prime (1009192013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99687 + ... + 109342.

It is an arithmetic number, because the mean of its divisors is an integer number (79013340).

Almost surely, 2^1009192012 is an apocalyptic number.

It is an amenable number.

1009192012 is a deficient number, since it is larger than the sum of its proper divisors (887128148).

1009192012 is a wasteful number, since it uses less digits than its factorization.

1009192012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209121 (or 209119 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 25.

The square root of 1009192012 is about 31767.7826106891. The cubic root of 1009192012 is about 1003.0546635297.

The spelling of 1009192012 in words is "one billion, nine million, one hundred ninety-two thousand, twelve".