1985076911 has 2 divisors, whose sum is σ = 1985076912. Its totient is φ = 1985076910.

The previous prime is 1985076901. The next prime is 1985076937. The reversal of 1985076911 is 1196705891.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1985076911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1985076901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 992538455 + 992538456.

It is an arithmetic number, because the mean of its divisors is an integer number (992538456).

Almost surely, 2^1985076911 is an apocalyptic number.

1985076911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1985076911 is an equidigital number, since it uses as much as digits as its factorization.

1985076911 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 47.

The square root of 1985076911 is about 44554.2019454956. The cubic root of 1985076911 is about 1256.7795711361.

The spelling of 1985076911 in words is "one billion, nine hundred eighty-five million, seventy-six thousand, nine hundred eleven".