1084919916939 has 4 divisors (see below), whose sum is σ = 1446559889256. Its totient is φ = 723279944624.

The previous prime is 1084919916923. The next prime is 1084919916943. The reversal of 1084919916939 is 9396199194801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1084919916939 - 2⁴ = 1084919916923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1084919916239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180819986154 + ... + 180819986159.

It is an arithmetic number, because the mean of its divisors is an integer number (361639972314).

Almost surely, 2^{1084919916939} is an apocalyptic number.

1084919916939 is a deficient number, since it is larger than the sum of its proper divisors (361639972317).

1084919916939 is an equidigital number, since it uses as much as digits as its factorization.

1084919916939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361639972316.

The product of its (nonzero) digits is 34012224, while the sum is 69.

The spelling of 1084919916939 in words is "one trillion, eighty-four billion, nine hundred nineteen million, nine hundred sixteen thousand, nine hundred thirty-nine".