2091989524 has 12 divisors (see below), whose sum is σ = 3669478848. Its totient is φ = 1043567000.

The previous prime is 2091989521. The next prime is 2091989527. The reversal of 2091989524 is 4259891902.

It is an interprime number because it is at equal distance from previous prime (2091989521) and next prime (2091989527).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091989521) 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, 605002 + ... + 608449.

It is an arithmetic number, because the mean of its divisors is an integer number (305789904).

Almost surely, 2^2091989524 is an apocalyptic number.

It is an amenable number.

2091989524 is a deficient number, since it is larger than the sum of its proper divisors (1577489324).

2091989524 is a wasteful number, since it uses less digits than its factorization.

2091989524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1213886 (or 1213884 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 49.

The square root of 2091989524 is about 45738.2719830997. The cubic root of 2091989524 is about 1278.9488285542.

The spelling of 2091989524 in words is "two billion, ninety-one million, nine hundred eighty-nine thousand, five hundred twenty-four".