1981962103 has 8 divisors (see below), whose sum is σ = 2184431760. Its totient is φ = 1783207680.

The previous prime is 1981962071. The next prime is 1981962107. The reversal of 1981962103 is 3012691891.

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

It is a cyclic number.

It is not a de Polignac number, because 1981962103 - 2⁵ = 1981962071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1981962107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927688 + ... + 929821.

It is an arithmetic number, because the mean of its divisors is an integer number (273053970).

Almost surely, 2^1981962103 is an apocalyptic number.

1981962103 is a deficient number, since it is larger than the sum of its proper divisors (202469657).

1981962103 is a wasteful number, since it uses less digits than its factorization.

1981962103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857617.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 1981962103 is about 44519.2329561056. The cubic root of 1981962103 is about 1256.1218843863.

The spelling of 1981962103 in words is "one billion, nine hundred eighty-one million, nine hundred sixty-two thousand, one hundred three".