1998369360 has 160 divisors (see below), whose sum is σ = 7412858880. Its totient is φ = 491899392.

The previous prime is 1998369301. The next prime is 1998369377. The reversal of 1998369360 is 639638991.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1998369297 and 1998369306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7504 + ... + 63663.

It is an arithmetic number, because the mean of its divisors is an integer number (46330368).

Almost surely, 2^1998369360 is an apocalyptic number.

1998369360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1998369360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3706429440).

1998369360 is an abundant number, since it is smaller than the sum of its proper divisors (5414489520).

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

1998369360 is a wasteful number, since it uses less digits than its factorization.

1998369360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71202 (or 71190 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The square root of 1998369360 is about 44703.1247229990. The cubic root of 1998369360 is about 1259.5785438505.

The spelling of 1998369360 in words is "one billion, nine hundred ninety-eight million, three hundred sixty-nine thousand, three hundred sixty".