1198596990 has 64 divisors (see below), whose sum is σ = 2917119744. Its totient is φ = 315153408.

The previous prime is 1198596983. The next prime is 1198597013. The reversal of 1198596990 is 996958911.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1198596990.

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 31 ways as a sum of consecutive naturals, for example, 1009177 + ... + 1010363.

It is an arithmetic number, because the mean of its divisors is an integer number (45579996).

Almost surely, 2^1198596990 is an apocalyptic number.

1198596990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1198596990 is an abundant number, since it is smaller than the sum of its proper divisors (1718522754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1198596990 is a wasteful number, since it uses less digits than its factorization.

1198596990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1641.

The product of its (nonzero) digits is 1574640, while the sum is 57.

The square root of 1198596990 is about 34620.7595237308. The cubic root of 1198596990 is about 1062.2442630643.

The spelling of 1198596990 in words is "one billion, one hundred ninety-eight million, five hundred ninety-six thousand, nine hundred ninety".