1985977833207 has 8 divisors (see below), whose sum is σ = 2648000682480. Its totient is φ = 1323970103040.

The previous prime is 1985977833197. The next prime is 1985977833233. The reversal of 1985977833207 is 7023387795891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1985977833207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985977833247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3469644 + ... + 4001297.

It is an arithmetic number, because the mean of its divisors is an integer number (331000085310).

Almost surely, 2^{1985977833207} is an apocalyptic number.

1985977833207 is a deficient number, since it is larger than the sum of its proper divisors (662022849273).

1985977833207 is an equidigital number, since it uses as much as digits as its factorization.

1985977833207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7559553.

The product of its (nonzero) digits is 160030080, while the sum is 69.

The spelling of 1985977833207 in words is "one trillion, nine hundred eighty-five billion, nine hundred seventy-seven million, eight hundred thirty-three thousand, two hundred seven".