1970708729 has 6 divisors (see below), whose sum is σ = 2166151050. Its totient is φ = 1791553280.

The previous prime is 1970708723. The next prime is 1970708743. The reversal of 1970708729 is 9278070791.

It can be written as a sum of positive squares in only one way, i.e., 1881217129 + 89491600 = 43373^2 + 9460^2 .

It is not a de Polignac number, because 1970708729 - 2¹² = 1970704633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1970708723) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8143304 + ... + 8143545.

It is an arithmetic number, because the mean of its divisors is an integer number (361025175).

Almost surely, 2^1970708729 is an apocalyptic number.

It is an amenable number.

1970708729 is a deficient number, since it is larger than the sum of its proper divisors (195442321).

1970708729 is a wasteful number, since it uses less digits than its factorization.

1970708729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16286871 (or 16286860 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 50.

The square root of 1970708729 is about 44392.6652612794. The cubic root of 1970708729 is about 1253.7399943138.

The spelling of 1970708729 in words is "one billion, nine hundred seventy million, seven hundred eight thousand, seven hundred twenty-nine".