1990035473 has 8 divisors (see below), whose sum is σ = 2014836768. Its totient is φ = 1965253984.

The previous prime is 1990035469. The next prime is 1990035479. The reversal of 1990035473 is 3745300991.

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 1990035473 - 2² = 1990035469 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1990035473.

It is not an unprimeable number, because it can be changed into a prime (1990035479) 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, 374765 + ... + 380037.

It is an arithmetic number, because the mean of its divisors is an integer number (251854596).

Almost surely, 2^1990035473 is an apocalyptic number.

It is an amenable number.

1990035473 is a deficient number, since it is larger than the sum of its proper divisors (24801295).

1990035473 is an equidigital number, since it uses as much as digits as its factorization.

1990035473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9903.

The product of its (nonzero) digits is 102060, while the sum is 41.

The square root of 1990035473 is about 44609.8136400501. The cubic root of 1990035473 is about 1257.8251456958.

The spelling of 1990035473 in words is "one billion, nine hundred ninety million, thirty-five thousand, four hundred seventy-three".