1513448629729 has 3 divisors (see below), whose sum is σ = 1513449859953. Its totient is φ = 1513447399506.

The previous prime is 1513448629669. The next prime is 1513448629739. The reversal of 1513448629729 is 9279268443151.

The square root of 1513448629729 is 1230223.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1513448629729 - 2¹⁹ = 1513448105441 is a prime.

It is a super-2 number, since 2×1513448629729² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1513448629739) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 615112 + ... + 1845334.

It is an arithmetic number, because the mean of its divisors is an integer number (504483286651).

Almost surely, 2^{1513448629729} is an apocalyptic number.

1513448629729 is the 1230223-rd square number.

1513448629729 is the 615112-nd centered octagonal number.

It is an amenable number.

1513448629729 is a deficient number, since it is larger than the sum of its proper divisors (1230224).

1513448629729 is an frugal number, since it uses more digits than its factorization.

1513448629729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460446 (or 1230223 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 61.

The spelling of 1513448629729 in words is "one trillion, five hundred thirteen billion, four hundred forty-eight million, six hundred twenty-nine thousand, seven hundred twenty-nine".