1992643072 has 80 divisors (see below), whose sum is σ = 4602026880. Its totient is φ = 844259328.

The previous prime is 1992643063. The next prime is 1992643087. The reversal of 1992643072 is 2703462991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 315853 + ... + 322099.

It is an arithmetic number, because the mean of its divisors is an integer number (57525336).

Almost surely, 2^1992643072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1992643072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2301013440).

1992643072 is an abundant number, since it is smaller than the sum of its proper divisors (2609383808).

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

1992643072 is an frugal number, since it uses more digits than its factorization.

1992643072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6361 (or 6345 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 1992643072 is about 44639.0308138517. The cubic root of 1992643072 is about 1258.3742937044.

The spelling of 1992643072 in words is "one billion, nine hundred ninety-two million, six hundred forty-three thousand, seventy-two".