1613434729 has 8 divisors (see below), whose sum is σ = 1625646600. Its totient is φ = 1601241600.

The previous prime is 1613434699. The next prime is 1613434733. The reversal of 1613434729 is 9274343161.

It can be written as a sum of positive squares in 4 ways, for example, as 9272025 + 1604162704 = 3045^2 + 40052^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1613434729 - 2¹³ = 1613426537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1613434691 and 1613434700.

It is not an unprimeable number, because it can be changed into a prime (1613434129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201849 + ... + 209689.

It is an arithmetic number, because the mean of its divisors is an integer number (203205825).

Almost surely, 2^1613434729 is an apocalyptic number.

It is an amenable number.

1613434729 is a deficient number, since it is larger than the sum of its proper divisors (12211871).

1613434729 is a wasteful number, since it uses less digits than its factorization.

1613434729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9371.

The product of its digits is 108864, while the sum is 40.

The square root of 1613434729 is about 40167.5830614689. The cubic root of 1613434729 is about 1172.8715907525.

The spelling of 1613434729 in words is "one billion, six hundred thirteen million, four hundred thirty-four thousand, seven hundred twenty-nine".