381970805911 has 2 divisors, whose sum is σ = 381970805912. Its totient is φ = 381970805910.

The previous prime is 381970805873. The next prime is 381970805927. The reversal of 381970805911 is 119508079183.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381970805911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381971805911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190985402955 + 190985402956.

It is an arithmetic number, because the mean of its divisors is an integer number (190985402956).

Almost surely, 2^381970805911 is an apocalyptic number.

381970805911 is a deficient number, since it is larger than the sum of its proper divisors (1).

381970805911 is an equidigital number, since it uses as much as digits as its factorization.

381970805911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 52.

The spelling of 381970805911 in words is "three hundred eighty-one billion, nine hundred seventy million, eight hundred five thousand, nine hundred eleven".