1442496661 has 2 divisors, whose sum is σ = 1442496662. Its totient is φ = 1442496660.

The previous prime is 1442496637. The next prime is 1442496677. The reversal of 1442496661 is 1666942441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 730620900 + 711875761 = 27030^2 + 26681^2 .

It is an emirp because it is prime and its reverse (1666942441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1442496661 - 2⁹ = 1442496149 is a prime.

It is a super-2 number, since 2×1442496661² = 4161593233992297842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442496691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721248330 + 721248331.

It is an arithmetic number, because the mean of its divisors is an integer number (721248331).

Almost surely, 2^1442496661 is an apocalyptic number.

It is an amenable number.

1442496661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442496661 is an equidigital number, since it uses as much as digits as its factorization.

1442496661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The square root of 1442496661 is about 37980.2140725931. The cubic root of 1442496661 is about 1129.8954822797.

The spelling of 1442496661 in words is "one billion, four hundred forty-two million, four hundred ninety-six thousand, six hundred sixty-one".