1970299729 has 4 divisors (see below), whose sum is σ = 1972103476. Its totient is φ = 1968495984.

The previous prime is 1970299697. The next prime is 1970299789. The reversal of 1970299729 is 9279920791.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9279920791 = 23 ⋅403474817.

It can be written as a sum of positive squares in 2 ways, for example, as 1582209729 + 388090000 = 39777^2 + 19700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1970299729 - 2⁵ = 1970299697 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1970299729.

It is not an unprimeable number, because it can be changed into a prime (1970299789) 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, 900234 + ... + 902419.

It is an arithmetic number, because the mean of its divisors is an integer number (493025869).

Almost surely, 2^1970299729 is an apocalyptic number.

It is an amenable number.

1970299729 is a deficient number, since it is larger than the sum of its proper divisors (1803747).

1970299729 is a wasteful number, since it uses less digits than its factorization.

1970299729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803746.

The product of its (nonzero) digits is 1285956, while the sum is 55.

The square root of 1970299729 is about 44388.0584053865. The cubic root of 1970299729 is about 1253.6532547688.

The spelling of 1970299729 in words is "one billion, nine hundred seventy million, two hundred ninety-nine thousand, seven hundred twenty-nine".