2601989650 has 96 divisors (see below), whose sum is σ = 5424652800. Its totient is φ = 922060800.

The previous prime is 2601989647. The next prime is 2601989651. The reversal of 2601989650 is 569891062.

It is a self number, because there is not a number n which added to its sum of digits gives 2601989650.

It is not an unprimeable number, because it can be changed into a prime (2601989651) 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, 2800386 + ... + 2801314.

It is an arithmetic number, because the mean of its divisors is an integer number (56506800).

Almost surely, 2^2601989650 is an apocalyptic number.

2601989650 is an abundant number, since it is smaller than the sum of its proper divisors (2822663150).

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

2601989650 is a wasteful number, since it uses less digits than its factorization.

2601989650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124 (or 1119 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 2601989650 is about 51009.7015282387. The cubic root of 2601989650 is about 1375.4195347900.

The spelling of 2601989650 in words is "two billion, six hundred one million, nine hundred eighty-nine thousand, six hundred fifty".