1494288761 has 20 divisors (see below), whose sum is σ = 1747824000. Its totient is φ = 1277449992.

The previous prime is 1494288751. The next prime is 1494288787. The reversal of 1494288761 is 1678824941.

It is a de Polignac number, because none of the positive numbers 2^k-1494288761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1494288701) 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 in 19 ways as a sum of consecutive naturals, for example, 1437680 + ... + 1438718.

It is an arithmetic number, because the mean of its divisors is an integer number (87391200).

Almost surely, 2^1494288761 is an apocalyptic number.

It is an amenable number.

1494288761 is a deficient number, since it is larger than the sum of its proper divisors (253535239).

1494288761 is an frugal number, since it uses more digits than its factorization.

1494288761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666 (or 1645 counting only the distinct ones).

The product of its digits is 774144, while the sum is 50.

The square root of 1494288761 is about 38656.0313663987. The cubic root of 1494288761 is about 1143.2595644015.

The spelling of 1494288761 in words is "one billion, four hundred ninety-four million, two hundred eighty-eight thousand, seven hundred sixty-one".