1965981002126 has 8 divisors (see below), whose sum is σ = 2948993847984. Its totient is φ = 982983052800.

The previous prime is 1965981002101. The next prime is 1965981002147. The reversal of 1965981002126 is 6212001895691.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3388130 + ... + 3925733.

It is an arithmetic number, because the mean of its divisors is an integer number (368624230998).

Almost surely, 2^{1965981002126} is an apocalyptic number.

1965981002126 is a deficient number, since it is larger than the sum of its proper divisors (983012845858).

1965981002126 is a wasteful number, since it uses less digits than its factorization.

1965981002126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7448266.

The product of its (nonzero) digits is 466560, while the sum is 50.

The spelling of 1965981002126 in words is "one trillion, nine hundred sixty-five billion, nine hundred eighty-one million, two thousand, one hundred twenty-six".