1451729117 has 2 divisors, whose sum is σ = 1451729118. Its totient is φ = 1451729116.

The previous prime is 1451729113. The next prime is 1451729171. The reversal of 1451729117 is 7119271541.

Together with next prime (1451729171) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1181915641 + 269813476 = 34379^2 + 16426^2 .

It is an emirp because it is prime and its reverse (7119271541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1451729117 - 2² = 1451729113 is a prime.

It is a super-3 number, since 3×1451729117³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1451729113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 725864558 + 725864559.

It is an arithmetic number, because the mean of its divisors is an integer number (725864559).

Almost surely, 2^1451729117 is an apocalyptic number.

It is an amenable number.

1451729117 is a deficient number, since it is larger than the sum of its proper divisors (1).

1451729117 is an equidigital number, since it uses as much as digits as its factorization.

1451729117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 38.

The square root of 1451729117 is about 38101.5631831556. The cubic root of 1451729117 is about 1132.3009260123.

It can be divided in two parts, 14517 and 29117, that added together give a palindrome (43634).

The spelling of 1451729117 in words is "one billion, four hundred fifty-one million, seven hundred twenty-nine thousand, one hundred seventeen".