1994920488 has 320 divisors, whose sum is σ = 6558045120. Its totient is φ = 559872000.

The previous prime is 1994920481. The next prime is 1994920513. The reversal of 1994920488 is 8840294991.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994920481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 12238695 + ... + 12238857.

It is an arithmetic number, because the mean of its divisors is an integer number (20493891).

Almost surely, 2^1994920488 is an apocalyptic number.

1994920488 is a gapful number since it is divisible by the number (18) 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 1994920488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3279022560).

1994920488 is an abundant number, since it is smaller than the sum of its proper divisors (4563124632).

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

1994920488 is a wasteful number, since it uses less digits than its factorization.

1994920488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310 (or 297 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 1994920488 is about 44664.5327748987. The cubic root of 1994920488 is about 1258.8535149427.

The spelling of 1994920488 in words is "one billion, nine hundred ninety-four million, nine hundred twenty thousand, four hundred eighty-eight".