1000378483931 has 2 divisors, whose sum is σ = 1000378483932. Its totient is φ = 1000378483930.

The previous prime is 1000378483913. The next prime is 1000378483933. The reversal of 1000378483931 is 1393848730001.

Together with previous prime (1000378483913) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000378483931 - 2²² = 1000374289627 is a prime.

It is a super-2 number, since 2×1000378483931² (a number of 25 digits) contains 22 as substring.

Together with 1000378483933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1000378483933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500189241965 + 500189241966.

It is an arithmetic number, because the mean of its divisors is an integer number (500189241966).

Almost surely, 2^{1000378483931} is an apocalyptic number.

1000378483931 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000378483931 is an equidigital number, since it uses as much as digits as its factorization.

1000378483931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 47.

The spelling of 1000378483931 in words is "one trillion, three hundred seventy-eight million, four hundred eighty-three thousand, nine hundred thirty-one".