1981962093 has 8 divisors (see below), whose sum is σ = 2672308800. Its totient is φ = 1306461728.

The previous prime is 1981962071. The next prime is 1981962107. The reversal of 1981962093 is 3902691891.

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 1981962093 - 2⁵ = 1981962061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1981962193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3711273 + ... + 3711806.

It is an arithmetic number, because the mean of its divisors is an integer number (334038600).

Almost surely, 2^1981962093 is an apocalyptic number.

It is an amenable number.

1981962093 is a deficient number, since it is larger than the sum of its proper divisors (690346707).

1981962093 is an equidigital number, since it uses as much as digits as its factorization.

1981962093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7423171.

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 1981962093 is about 44519.2328437946. The cubic root of 1981962093 is about 1256.1218822737.

The spelling of 1981962093 in words is "one billion, nine hundred eighty-one million, nine hundred sixty-two thousand, ninety-three".