1970640973 has 8 divisors (see below), whose sum is σ = 2329822080. Its totient is φ = 1630875120.

The previous prime is 1970640911. The next prime is 1970640977. The reversal of 1970640973 is 3790460791.

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

It is a de Polignac number, because none of the positive numbers 2^k-1970640973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1970640977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4853593 + ... + 4853998.

It is an arithmetic number, because the mean of its divisors is an integer number (291227760).

Almost surely, 2^1970640973 is an apocalyptic number.

It is an amenable number.

1970640973 is a deficient number, since it is larger than the sum of its proper divisors (359181107).

1970640973 is an equidigital number, since it uses as much as digits as its factorization.

1970640973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9707627.

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 1970640973 is about 44391.9021106327. The cubic root of 1970640973 is about 1253.7256256455.

The spelling of 1970640973 in words is "one billion, nine hundred seventy million, six hundred forty thousand, nine hundred seventy-three".