1970801893 has 2 divisors, whose sum is σ = 1970801894. Its totient is φ = 1970801892.

The previous prime is 1970801879. The next prime is 1970801927. The reversal of 1970801893 is 3981080791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1337876929 + 632924964 = 36577^2 + 25158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1970801893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1970801813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 985400946 + 985400947.

It is an arithmetic number, because the mean of its divisors is an integer number (985400947).

Almost surely, 2^1970801893 is an apocalyptic number.

It is an amenable number.

1970801893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1970801893 is an equidigital number, since it uses as much as digits as its factorization.

1970801893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 46.

The square root of 1970801893 is about 44393.7145663663. The cubic root of 1970801893 is about 1253.7597505891.

The spelling of 1970801893 in words is "one billion, nine hundred seventy million, eight hundred one thousand, eight hundred ninety-three".