1988093446 has 4 divisors (see below), whose sum is σ = 2982140172. Its totient is φ = 994046722.

The previous prime is 1988093431. The next prime is 1988093449. The reversal of 1988093446 is 6443908891.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6443908891 = 7 ⋅920558413.

It is a junction number, because it is equal to n+sod(n) for n = 1988093393 and 1988093402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988093449) 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 as a sum of consecutive naturals, namely, 497023360 + ... + 497023363.

It is an arithmetic number, because the mean of its divisors is an integer number (745535043).

Almost surely, 2^1988093446 is an apocalyptic number.

1988093446 is a deficient number, since it is larger than the sum of its proper divisors (994046726).

1988093446 is an equidigital number, since it uses as much as digits as its factorization.

1988093446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994046725.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 1988093446 is about 44588.0415133924. The cubic root of 1988093446 is about 1257.4158522504.

The spelling of 1988093446 in words is "one billion, nine hundred eighty-eight million, ninety-three thousand, four hundred forty-six".