1990598 has 16 divisors (see below), whose sum is σ = 3193344. Its totient is φ = 927360.

The previous prime is 1990579. The next prime is 1990607. The reversal of 1990598 is 8950991.

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, 4088 + ... + 4548.

It is an arithmetic number, because the mean of its divisors is an integer number (199584).

2^1990598 is an apocalyptic number.

1990598 is a deficient number, since it is larger than the sum of its proper divisors (1202746).

1990598 is a wasteful number, since it uses less digits than its factorization.

1990598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607.

The product of its (nonzero) digits is 29160, while the sum is 41.

The square root of 1990598 is about 1410.8855375260. The cubic root of 1990598 is about 125.7943651782.

The spelling of 1990598 in words is "one million, nine hundred ninety thousand, five hundred ninety-eight".