1070345729 has 4 divisors (see below), whose sum is σ = 1070415876. Its totient is φ = 1070275584.

The previous prime is 1070345699. The next prime is 1070345747. The reversal of 1070345729 is 9275430701.

1070345729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9275430701 = 61 ⋅152056241.

It can be written as a sum of positive squares in 2 ways, for example, as 540655504 + 529690225 = 23252^2 + 23015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1070345729 is a prime.

It is a super-2 number, since 2×1070345729² = 2291279959177082882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1070345692 and 1070345701.

It is not an unprimeable number, because it can be changed into a prime (1070345329) 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, 1424 + ... + 46289.

It is an arithmetic number, because the mean of its divisors is an integer number (267603969).

Almost surely, 2^1070345729 is an apocalyptic number.

It is an amenable number.

1070345729 is a deficient number, since it is larger than the sum of its proper divisors (70147).

1070345729 is an equidigital number, since it uses as much as digits as its factorization.

1070345729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70146.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 1070345729 is about 32716.1386627456. The cubic root of 1070345729 is about 1022.9192702731.

The spelling of 1070345729 in words is "one billion, seventy million, three hundred forty-five thousand, seven hundred twenty-nine".