14164849981 has 2 divisors, whose sum is σ = 14164849982. Its totient is φ = 14164849980.

The previous prime is 14164849931. The next prime is 14164849991. The reversal of 14164849981 is 18994846141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13144622500 + 1020227481 = 114650^2 + 31941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14164849981 is a prime.

It is a super-2 number, since 2×14164849981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14164849901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7082424990 + 7082424991.

It is an arithmetic number, because the mean of its divisors is an integer number (7082424991).

Almost surely, 2^14164849981 is an apocalyptic number.

It is an amenable number.

14164849981 is a deficient number, since it is larger than the sum of its proper divisors (1).

14164849981 is an equidigital number, since it uses as much as digits as its factorization.

14164849981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1990656, while the sum is 55.

The spelling of 14164849981 in words is "fourteen billion, one hundred sixty-four million, eight hundred forty-nine thousand, nine hundred eighty-one".