1494994961 has 2 divisors, whose sum is σ = 1494994962. Its totient is φ = 1494994960.

The previous prime is 1494994877. The next prime is 1494994981. The reversal of 1494994961 is 1694994941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1086954961 + 408040000 = 32969^2 + 20200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1494994961 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1494994897 and 1494994906.

It is not a weakly prime, because it can be changed into another prime (1494994981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747497480 + 747497481.

It is an arithmetic number, because the mean of its divisors is an integer number (747497481).

Almost surely, 2^1494994961 is an apocalyptic number.

It is an amenable number.

1494994961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1494994961 is an equidigital number, since it uses as much as digits as its factorization.

1494994961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2519424, while the sum is 56.

The square root of 1494994961 is about 38665.1646964034. The cubic root of 1494994961 is about 1143.4396373056.

The spelling of 1494994961 in words is "one billion, four hundred ninety-four million, nine hundred ninety-four thousand, nine hundred sixty-one".