1494341721 has 12 divisors (see below), whose sum is σ = 2160043860. Its totient is φ = 995512320.

The previous prime is 1494341707. The next prime is 1494341729. The reversal of 1494341721 is 1271434941.

It can be written as a sum of positive squares in 2 ways, for example, as 71166096 + 1423175625 = 8436^2 + 37725^2 .

It is not a de Polignac number, because 1494341721 - 2⁵ = 1494341689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1494341729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46240 + ... + 71601.

It is an arithmetic number, because the mean of its divisors is an integer number (180003655).

Almost surely, 2^1494341721 is an apocalyptic number.

It is an amenable number.

1494341721 is a deficient number, since it is larger than the sum of its proper divisors (665702139).

1494341721 is a wasteful number, since it uses less digits than its factorization.

1494341721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119256 (or 119253 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 1494341721 is about 38656.7163763297. The cubic root of 1494341721 is about 1143.2730705619.

The spelling of 1494341721 in words is "one billion, four hundred ninety-four million, three hundred forty-one thousand, seven hundred twenty-one".