2660611938 has 8 divisors (see below), whose sum is σ = 5321223888. Its totient is φ = 886870644.

The previous prime is 2660611907. The next prime is 2660611939. The reversal of 2660611938 is 8391160662.

It is a sphenic number, since it is the product of 3 distinct primes.

2660611938 is an admirable number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2660611938.

It is not an unprimeable number, because it can be changed into a prime (2660611939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221717656 + ... + 221717667.

It is an arithmetic number, because the mean of its divisors is an integer number (665152986).

Almost surely, 2^2660611938 is an apocalyptic number.

2660611938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2660611938 is a wasteful number, since it uses less digits than its factorization.

2660611938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443435328.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 2660611938 is about 51581.1199762083. The cubic root of 2660611938 is about 1385.6722247754.

The spelling of 2660611938 in words is "two billion, six hundred sixty million, six hundred eleven thousand, nine hundred thirty-eight".