1970691872 has 24 divisors (see below), whose sum is σ = 3880831500. Its totient is φ = 985083904.

The previous prime is 1970691787. The next prime is 1970691881. The reversal of 1970691872 is 2781960791.

It can be written as a sum of positive squares in 2 ways, for example, as 1956823696 + 13868176 = 44236^2 + 3724^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1970691872.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 181904 + ... + 192432.

Almost surely, 2^1970691872 is an apocalyptic number.

It is an amenable number.

1970691872 is a deficient number, since it is larger than the sum of its proper divisors (1910139628).

1970691872 is a wasteful number, since it uses less digits than its factorization.

1970691872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16388 (or 16380 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 50.

The square root of 1970691872 is about 44392.4753984276. The cubic root of 1970691872 is about 1253.7364195668.

The spelling of 1970691872 in words is "one billion, nine hundred seventy million, six hundred ninety-one thousand, eight hundred seventy-two".