1014239981 has 2 divisors, whose sum is σ = 1014239982. Its totient is φ = 1014239980.

The previous prime is 1014239957. The next prime is 1014240023. The reversal of 1014239981 is 1899324101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 921426025 + 92813956 = 30355^2 + 9634^2 .

It is an emirp because it is prime and its reverse (1899324101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1014239981 is a prime.

It is a super-2 number, since 2×1014239981² = 2057365478117760722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1014239911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507119990 + 507119991.

It is an arithmetic number, because the mean of its divisors is an integer number (507119991).

Almost surely, 2^1014239981 is an apocalyptic number.

It is an amenable number.

1014239981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1014239981 is an equidigital number, since it uses as much as digits as its factorization.

1014239981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 1014239981 is about 31847.1345806809. The cubic root of 1014239981 is about 1004.7243061177.

The spelling of 1014239981 in words is "one billion, fourteen million, two hundred thirty-nine thousand, nine hundred eighty-one".