13976940181 has 4 divisors (see below), whose sum is σ = 14105169100. Its totient is φ = 13848711264.

The previous prime is 13976940121. The next prime is 13976940239. The reversal of 13976940181 is 18104967931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10234559556 + 3742380625 = 101166^2 + 61175^2 .

It is a cyclic number.

It is not a de Polignac number, because 13976940181 - 2¹¹ = 13976938133 is a prime.

It is a super-2 number, since 2×13976940181² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13976940121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64114296 + ... + 64114513.

It is an arithmetic number, because the mean of its divisors is an integer number (3526292275).

Almost surely, 2^13976940181 is an apocalyptic number.

It is an amenable number.

13976940181 is a deficient number, since it is larger than the sum of its proper divisors (128228919).

13976940181 is a wasteful number, since it uses less digits than its factorization.

13976940181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128228918.

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 13976940181 in words is "thirteen billion, nine hundred seventy-six million, nine hundred forty thousand, one hundred eighty-one".