1970211601 has 8 divisors (see below), whose sum is σ = 2000124360. Its totient is φ = 1940471808.

The previous prime is 1970211571. The next prime is 1970211619. The reversal of 1970211601 is 1061120791.

It can be written as a sum of positive squares in 4 ways, for example, as 64016001 + 1906195600 = 8001^2 + 43660^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1970211601 - 2⁵ = 1970211569 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 1970211601.

It is not an unprimeable number, because it can be changed into a prime (1970211401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20196 + ... + 65941.

It is an arithmetic number, because the mean of its divisors is an integer number (250015545).

Almost surely, 2^1970211601 is an apocalyptic number.

It is an amenable number.

1970211601 is a deficient number, since it is larger than the sum of its proper divisors (29912759).

1970211601 is an equidigital number, since it uses as much as digits as its factorization.

1970211601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86483.

The product of its (nonzero) digits is 756, while the sum is 28.

The square root of 1970211601 is about 44387.0656948621. The cubic root of 1970211601 is about 1253.6345632638.

The spelling of 1970211601 in words is "one billion, nine hundred seventy million, two hundred eleven thousand, six hundred one".