2009667740 has 24 divisors (see below), whose sum is σ = 4227280512. Its totient is φ = 802537920.

The previous prime is 2009667713. The next prime is 2009667761. The reversal of 2009667740 is 477669002.

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, 70631 + ... + 94910.

It is an arithmetic number, because the mean of its divisors is an integer number (176136688).

Almost surely, 2^2009667740 is an apocalyptic number.

2009667740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2009667740 is an abundant number, since it is smaller than the sum of its proper divisors (2217612772).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2009667740 is a wasteful number, since it uses less digits than its factorization.

2009667740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166157 (or 166155 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 2009667740 is about 44829.3178623097. The cubic root of 2009667740 is about 1261.9478857627.

The spelling of 2009667740 in words is "two billion, nine million, six hundred sixty-seven thousand, seven hundred forty".