1998652392 has 192 divisors, whose sum is σ = 6156259200. Its totient is φ = 580231680.

The previous prime is 1998652391. The next prime is 1998652399. The reversal of 1998652392 is 2932568991.

It is a happy number.

1998652392 is a `hidden beast` number, since 199 + 8 + 65 + 2 + 392 = 666.

It is a super-2 number, since 2×1998652392² = 7989222768094643328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1998652391) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3973213 + ... + 3973715.

It is an arithmetic number, because the mean of its divisors is an integer number (32063850).

Almost surely, 2^1998652392 is an apocalyptic number.

1998652392 is a gapful number since it is divisible by the number (12) 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 1998652392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3078129600).

1998652392 is an abundant number, since it is smaller than the sum of its proper divisors (4157606808).

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

1998652392 is a wasteful number, since it uses less digits than its factorization.

1998652392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 721 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 1998652392 is about 44706.2902956620. The cubic root of 1998652392 is about 1259.6380063657.

The spelling of 1998652392 in words is "one billion, nine hundred ninety-eight million, six hundred fifty-two thousand, three hundred ninety-two".