1322001998 has 4 divisors (see below), whose sum is σ = 1983003000. Its totient is φ = 661000998.

The previous prime is 1322001997. The next prime is 1322002021. The reversal of 1322001998 is 8991002231.

It is a semiprime because it is the product of two primes.

1322001998 is a modest number, since divided by 1998 gives 1322 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322001997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330500498 + ... + 330500501.

It is an arithmetic number, because the mean of its divisors is an integer number (495750750).

Almost surely, 2^1322001998 is an apocalyptic number.

1322001998 is a deficient number, since it is larger than the sum of its proper divisors (661001002).

1322001998 is an equidigital number, since it uses as much as digits as its factorization.

1322001998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661001001.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 1322001998 is about 36359.3454011482. The cubic root of 1322001998 is about 1097.5156046854.

The spelling of 1322001998 in words is "one billion, three hundred twenty-two million, one thousand, nine hundred ninety-eight".