13841209491 has 16 divisors (see below), whose sum is σ = 19777807104. Its totient is φ = 8587728864.

The previous prime is 13841209451. The next prime is 13841209507. The reversal of 13841209491 is 19490214831.

It is not a de Polignac number, because 13841209491 - 2³⁰ = 12767467667 is a prime.

It is a super-3 number, since 3×13841209491³ (a number of 31 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (13841209411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2708221 + ... + 2713326.

It is an arithmetic number, because the mean of its divisors is an integer number (1236112944).

Almost surely, 2^13841209491 is an apocalyptic number.

13841209491 is a deficient number, since it is larger than the sum of its proper divisors (5936597613).

13841209491 is a wasteful number, since it uses less digits than its factorization.

13841209491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5421610.

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 13841209491 in words is "thirteen billion, eight hundred forty-one million, two hundred nine thousand, four hundred ninety-one".