2669943900 has 144 divisors (see below), whose sum is σ = 8476894944. Its totient is φ = 644766720.

The previous prime is 2669943893. The next prime is 2669943907. The reversal of 2669943900 is 93499662.

2669943900 = 202² + 203² + ... + 2001².

It is an interprime number because it is at equal distance from previous prime (2669943893) and next prime (2669943907).

It is a self number, because there is not a number n which added to its sum of digits gives 2669943900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2669943907) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 200242 + ... + 213158.

It is an arithmetic number, because the mean of its divisors is an integer number (58867326).

Almost surely, 2^2669943900 is an apocalyptic number.

2669943900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2669943900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4238447472).

2669943900 is an abundant number, since it is smaller than the sum of its proper divisors (5806951044).

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

2669943900 is a wasteful number, since it uses less digits than its factorization.

2669943900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13000 (or 12993 counting only the distinct ones).

The product of its (nonzero) digits is 629856, while the sum is 48.

The square root of 2669943900 is about 51671.4998814627. The cubic root of 2669943900 is about 1387.2903928151.

The spelling of 2669943900 in words is "two billion, six hundred sixty-nine million, nine hundred forty-three thousand, nine hundred".