1990548000 has 384 divisors, whose sum is σ = 8283824640. Its totient is φ = 454809600.

The previous prime is 1990547981. The next prime is 1990548017. The reversal of 1990548000 is 8450991.

It is a super-3 number, since 3×1990548000³ (a number of 29 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 754684 + ... + 757316.

It is an arithmetic number, because the mean of its divisors is an integer number (21572460).

Almost surely, 2^1990548000 is an apocalyptic number.

1990548000 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 1990548000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4141912320).

1990548000 is an abundant number, since it is smaller than the sum of its proper divisors (6293276640).

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

1990548000 is a wasteful number, since it uses less digits than its factorization.

1990548000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2674 (or 2650 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1990548000 is about 44615.5578245975. The cubic root of 1990548000 is about 1257.9331193176.

Adding to 1990548000 its reverse (8450991), we get a palindrome (1998998991).

The spelling of 1990548000 in words is "one billion, nine hundred ninety million, five hundred forty-eight thousand".