1808979740105 has 32 divisors (see below), whose sum is σ = 2214837381120. Its totient is φ = 1418082992640.

The previous prime is 1808979740059. The next prime is 1808979740111. The reversal of 1808979740105 is 5010479798081.

It is not a de Polignac number, because 1808979740105 - 2⁸ = 1808979739849 is a prime.

It is a super-2 number, since 2×1808979740105² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 70214216 + ... + 70239974.

It is an arithmetic number, because the mean of its divisors is an integer number (69213668160).

Almost surely, 2^{1808979740105} is an apocalyptic number.

It is an amenable number.

1808979740105 is a deficient number, since it is larger than the sum of its proper divisors (405857641015).

1808979740105 is a wasteful number, since it uses less digits than its factorization.

1808979740105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27081.

The product of its (nonzero) digits is 5080320, while the sum is 59.

The spelling of 1808979740105 in words is "one trillion, eight hundred eight billion, nine hundred seventy-nine million, seven hundred forty thousand, one hundred five".