1437665746729 has 27 divisors (see below), whose sum is σ = 1538793746053. Its totient is φ = 1342910240000.

The previous prime is 1437665746687. The next prime is 1437665746739. The reversal of 1437665746729 is 9276475667341.

The square root of 1437665746729 is 1199027.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 300780949225 + 1136884797504 = 548435^2 + 1066248^2 .

It is not a de Polignac number, because 1437665746729 - 2¹⁵ = 1437665713961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1437665746739) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 5116248069 + ... + 5116248349.

Almost surely, 2^{1437665746729} is an apocalyptic number.

1437665746729 is the 1199027-th square number.

1437665746729 is the 599514-th centered octagonal number.

It is an amenable number.

1437665746729 is a deficient number, since it is larger than the sum of its proper divisors (101127999324).

1437665746729 is an frugal number, since it uses more digits than its factorization.

1437665746729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098 (or 549 counting only the distinct ones).

The product of its digits is 320060160, while the sum is 67.

The spelling of 1437665746729 in words is "one trillion, four hundred thirty-seven billion, six hundred sixty-five million, seven hundred forty-six thousand, seven hundred twenty-nine".