2009031994 has 16 divisors (see below), whose sum is σ = 3257892000. Its totient is φ = 925925904.

The previous prime is 2009031989. The next prime is 2009032009. The reversal of 2009031994 is 4991309002.

It is a Harshad number since it is a multiple of its sum of digits (37).

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, 713044 + ... + 715855.

It is an arithmetic number, because the mean of its divisors is an integer number (203618250).

Almost surely, 2^2009031994 is an apocalyptic number.

2009031994 is a deficient number, since it is larger than the sum of its proper divisors (1248860006).

2009031994 is a wasteful number, since it uses less digits than its factorization.

2009031994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428957.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 2009031994 is about 44822.2265622760. The cubic root of 2009031994 is about 1261.8148019170.

The spelling of 2009031994 in words is "two billion, nine million, thirty-one thousand, nine hundred ninety-four".