1998337722 has 16 divisors (see below), whose sum is σ = 4036247712. Its totient is φ = 659517200.

The previous prime is 1998337721. The next prime is 1998337739. The reversal of 1998337722 is 2277338991.

It is not an unprimeable number, because it can be changed into a prime (1998337721) 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, 1648188 + ... + 1649399.

It is an arithmetic number, because the mean of its divisors is an integer number (252265482).

Almost surely, 2^1998337722 is an apocalyptic number.

1998337722 is an abundant number, since it is smaller than the sum of its proper divisors (2037909990).

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

1998337722 is a wasteful number, since it uses less digits than its factorization.

1998337722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3297693.

The product of its digits is 1143072, while the sum is 51.

The square root of 1998337722 is about 44702.7708537178. The cubic root of 1998337722 is about 1259.5718966382.

The spelling of 1998337722 in words is "one billion, nine hundred ninety-eight million, three hundred thirty-seven thousand, seven hundred twenty-two".