2309805491830 has 16 divisors (see below), whose sum is σ = 4159595478240. Its totient is φ = 923489842752.

The previous prime is 2309805491801. The next prime is 2309805491831. The reversal of 2309805491830 is 381945089032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2309805491831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54021810 + ... + 54064549.

It is an arithmetic number, because the mean of its divisors is an integer number (259974717390).

Almost surely, 2^{2309805491830} is an apocalyptic number.

2309805491830 is a deficient number, since it is larger than the sum of its proper divisors (1849789986410).

2309805491830 is a wasteful number, since it uses less digits than its factorization.

2309805491830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108088503.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 2309805491830 in words is "two trillion, three hundred nine billion, eight hundred five million, four hundred ninety-one thousand, eight hundred thirty".