13840385290 has 16 divisors (see below), whose sum is σ = 25212847968. Its totient is φ = 5469453136.

The previous prime is 13840385269. The next prime is 13840385291. The reversal of 13840385290 is 9258304831.

It is not an unprimeable number, because it can be changed into a prime (13840385291) 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, 8336752 + ... + 8338411.

It is an arithmetic number, because the mean of its divisors is an integer number (1575802998).

Almost surely, 2^13840385290 is an apocalyptic number.

13840385290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13840385290 is a deficient number, since it is larger than the sum of its proper divisors (11372462678).

13840385290 is a wasteful number, since it uses less digits than its factorization.

13840385290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16675253.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 13840385290 in words is "thirteen billion, eight hundred forty million, three hundred eighty-five thousand, two hundred ninety".