2691789650 has 48 divisors (see below), whose sum is σ = 5479470720. Its totient is φ = 975681600.

The previous prime is 2691789647. The next prime is 2691789713. The reversal of 2691789650 is 569871962.

It is a junction number, because it is equal to n+sod(n) for n = 2691789592 and 2691789601.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166631 + ... + 182069.

It is an arithmetic number, because the mean of its divisors is an integer number (114155640).

Almost surely, 2^2691789650 is an apocalyptic number.

2691789650 is an abundant number, since it is smaller than the sum of its proper divisors (2787681070).

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

2691789650 is a wasteful number, since it uses less digits than its factorization.

2691789650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15779 (or 15774 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 53.

The square root of 2691789650 is about 51882.4599455346. The cubic root of 2691789650 is about 1391.0637699906.

The spelling of 2691789650 in words is "two billion, six hundred ninety-one million, seven hundred eighty-nine thousand, six hundred fifty".