1980690590 has 16 divisors (see below), whose sum is σ = 3566050272. Its totient is φ = 792096864.

The previous prime is 1980690583. The next prime is 1980690617. The reversal of 1980690590 is 950960891.

It is a congruent number.

It is an unprimeable number.

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, 29732 + ... + 69608.

It is an arithmetic number, because the mean of its divisors is an integer number (222878142).

Almost surely, 2^1980690590 is an apocalyptic number.

1980690590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1980690590 is a deficient number, since it is larger than the sum of its proper divisors (1585359682).

1980690590 is a wasteful number, since it uses less digits than its factorization.

1980690590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44851.

The product of its (nonzero) digits is 174960, while the sum is 47.

The square root of 1980690590 is about 44504.9501741098. The cubic root of 1980690590 is about 1255.8532083813.

The spelling of 1980690590 in words is "one billion, nine hundred eighty million, six hundred ninety thousand, five hundred ninety".