1494642287 has 2 divisors, whose sum is σ = 1494642288. Its totient is φ = 1494642286.

The previous prime is 1494642209. The next prime is 1494642307. The reversal of 1494642287 is 7822464941.

It is a strong prime.

It is an emirp because it is prime and its reverse (7822464941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1494642287 - 2¹⁰ = 1494641263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1494642887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 747321143 + 747321144.

It is an arithmetic number, because the mean of its divisors is an integer number (747321144).

Almost surely, 2^1494642287 is an apocalyptic number.

1494642287 is a deficient number, since it is larger than the sum of its proper divisors (1).

1494642287 is an equidigital number, since it uses as much as digits as its factorization.

1494642287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 774144, while the sum is 47.

The square root of 1494642287 is about 38660.6038105977. The cubic root of 1494642287 is about 1143.3497165688.

The spelling of 1494642287 in words is "one billion, four hundred ninety-four million, six hundred forty-two thousand, two hundred eighty-seven".