1970708681 has 4 divisors (see below), whose sum is σ = 1973361792. Its totient is φ = 1968055572.

The previous prime is 1970708669. The next prime is 1970708683. The reversal of 1970708681 is 1868070791.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1970708681 - 2¹⁸ = 1970446537 is a prime.

It is a super-2 number, since 2×1970708681² = 7767385410737519522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1970708683) 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, 1325441 + ... + 1326926.

It is an arithmetic number, because the mean of its divisors is an integer number (493340448).

Almost surely, 2^1970708681 is an apocalyptic number.

It is an amenable number.

1970708681 is a deficient number, since it is larger than the sum of its proper divisors (2653111).

1970708681 is an equidigital number, since it uses as much as digits as its factorization.

1970708681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653110.

The product of its (nonzero) digits is 169344, while the sum is 47.

The square root of 1970708681 is about 44392.6647206495. The cubic root of 1970708681 is about 1253.7399841348.

The spelling of 1970708681 in words is "one billion, nine hundred seventy million, seven hundred eight thousand, six hundred eighty-one".