1970212609 has 2 divisors, whose sum is σ = 1970212610. Its totient is φ = 1970212608.

The previous prime is 1970212567. The next prime is 1970212613. The reversal of 1970212609 is 9062120791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1463827600 + 506385009 = 38260^2 + 22503^2 .

It is a cyclic number.

It is not a de Polignac number, because 1970212609 - 2¹⁹ = 1969688321 is a prime.

It is not a weakly prime, because it can be changed into another prime (1970212639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985106304 + 985106305.

It is an arithmetic number, because the mean of its divisors is an integer number (985106305).

Almost surely, 2^1970212609 is an apocalyptic number.

It is an amenable number.

1970212609 is a deficient number, since it is larger than the sum of its proper divisors (1).

1970212609 is an equidigital number, since it uses as much as digits as its factorization.

1970212609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1970212609 is about 44387.0770495197. The cubic root of 1970212609 is about 1253.6347770587.

The spelling of 1970212609 in words is "one billion, nine hundred seventy million, two hundred twelve thousand, six hundred nine".