1989770603040 has 384 divisors, whose sum is σ = 7672545296640. Its totient is φ = 477591552000.

The previous prime is 1989770603011. The next prime is 1989770603083. The reversal of 1989770603040 is 403060779891.

It is a happy number.

1989770603040 is a `hidden beast` number, since 198 + 97 + 7 + 0 + 60 + 304 + 0 = 666.

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

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, 4592232 + ... + 5006808.

It is an arithmetic number, because the mean of its divisors is an integer number (19980586710).

Almost surely, 2^{1989770603040} is an apocalyptic number.

1989770603040 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 1989770603040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3836272648320).

1989770603040 is an abundant number, since it is smaller than the sum of its proper divisors (5682774693600).

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

1989770603040 is a wasteful number, since it uses less digits than its factorization.

1989770603040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414713 (or 414699 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 1989770603040 in words is "one trillion, nine hundred eighty-nine billion, seven hundred seventy million, six hundred three thousand, forty".