1416349981 has 2 divisors, whose sum is σ = 1416349982. Its totient is φ = 1416349980.

The previous prime is 1416349939. The next prime is 1416349997. The reversal of 1416349981 is 1899436141.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1406925081 + 9424900 = 37509^2 + 3070^2 .

It is an emirp because it is prime and its reverse (1899436141) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1416349981 - 2⁷ = 1416349853 is a prime.

It is a super-2 number, since 2×1416349981² = 4012094537357400722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1416349681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 708174990 + 708174991.

It is an arithmetic number, because the mean of its divisors is an integer number (708174991).

Almost surely, 2^1416349981 is an apocalyptic number.

It is an amenable number.

1416349981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1416349981 is an equidigital number, since it uses as much as digits as its factorization.

1416349981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 46.

The square root of 1416349981 is about 37634.4254772143. The cubic root of 1416349981 is about 1123.0269894531.

The spelling of 1416349981 in words is "one billion, four hundred sixteen million, three hundred forty-nine thousand, nine hundred eighty-one".