1990444935 has 8 divisors (see below), whose sum is σ = 3184711920. Its totient is φ = 1061570624.

The previous prime is 1990444913. The next prime is 1990444943. The reversal of 1990444935 is 5394440991.

It is a happy number.

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 1990444935 - 2¹⁰ = 1990443911 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66348150 + ... + 66348179.

It is an arithmetic number, because the mean of its divisors is an integer number (398088990).

Almost surely, 2^1990444935 is an apocalyptic number.

1990444935 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1990444935 is a deficient number, since it is larger than the sum of its proper divisors (1194266985).

1990444935 is a wasteful number, since it uses less digits than its factorization.

1990444935 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132696337.

The product of its (nonzero) digits is 699840, while the sum is 48.

The square root of 1990444935 is about 44614.4027753370. The cubic root of 1990444935 is about 1257.9114081917.

The spelling of 1990444935 in words is "one billion, nine hundred ninety million, four hundred forty-four thousand, nine hundred thirty-five".