2123437659 has 64 divisors (see below), whose sum is σ = 3455385600. Its totient is φ = 1134207360.

The previous prime is 2123437643. The next prime is 2123437697. The reversal of 2123437659 is 9567343212.

It is not a de Polignac number, because 2123437659 - 2⁴ = 2123437643 is a prime.

Its product of digits (272160) is a multiple of the sum of its prime divisors (720).

It is a self number, because there is not a number n which added to its sum of digits gives 2123437659.

It is not an unprimeable number, because it can be changed into a prime (2123437609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4793092 + ... + 4793534.

It is an arithmetic number, because the mean of its divisors is an integer number (53990400).

Almost surely, 2^2123437659 is an apocalyptic number.

2123437659 is a deficient number, since it is larger than the sum of its proper divisors (1331947941).

2123437659 is a wasteful number, since it uses less digits than its factorization.

2123437659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720.

The product of its digits is 272160, while the sum is 42.

The square root of 2123437659 is about 46080.7732031484. The cubic root of 2123437659 is about 1285.3256421082.

The spelling of 2123437659 in words is "two billion, one hundred twenty-three million, four hundred thirty-seven thousand, six hundred fifty-nine".