1493064737 has 4 divisors (see below), whose sum is σ = 1533417876. Its totient is φ = 1452711600.

The previous prime is 1493064709. The next prime is 1493064743. The reversal of 1493064737 is 7374603941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7374603941 = 23497 ⋅313853.

It can be written as a sum of positive squares in 2 ways, for example, as 1343149201 + 149915536 = 36649^2 + 12244^2 .

It is a cyclic number.

It is not a de Polignac number, because 1493064737 - 2¹⁰ = 1493063713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1493094737) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20176514 + ... + 20176587.

It is an arithmetic number, because the mean of its divisors is an integer number (383354469).

Almost surely, 2^1493064737 is an apocalyptic number.

It is an amenable number.

1493064737 is a deficient number, since it is larger than the sum of its proper divisors (40353139).

1493064737 is an equidigital number, since it uses as much as digits as its factorization.

1493064737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40353138.

The product of its (nonzero) digits is 381024, while the sum is 44.

The square root of 1493064737 is about 38640.1958716568. The cubic root of 1493064737 is about 1142.9473178780.

The spelling of 1493064737 in words is "one billion, four hundred ninety-three million, sixty-four thousand, seven hundred thirty-seven".