1992438624 has 192 divisors, whose sum is σ = 6190877952. Its totient is φ = 554188800.

The previous prime is 1992438619. The next prime is 1992438647. The reversal of 1992438624 is 4268342991.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 734679 + ... + 737385.

It is an arithmetic number, because the mean of its divisors is an integer number (32244156).

Almost surely, 2^1992438624 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 1992438624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3095438976).

1992438624 is an abundant number, since it is smaller than the sum of its proper divisors (4198439328).

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

1992438624 is a wasteful number, since it uses less digits than its factorization.

1992438624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789 (or 2781 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 1992438624 is about 44636.7407412324. The cubic root of 1992438624 is about 1258.3312552378.

The spelling of 1992438624 in words is "one billion, nine hundred ninety-two million, four hundred thirty-eight thousand, six hundred twenty-four".