1989762622380 has 384 divisors, whose sum is σ = 7302121747200. Its totient is φ = 445080158208.

The previous prime is 1989762622373. The next prime is 1989762622399. The reversal of 1989762622380 is 832262679891.

1989762622380 is a `hidden beast` number, since 1 + 98 + 97 + 62 + 6 + 22 + 380 = 666.

It is a super-3 number, since 3×1989762622380³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3173394 + ... + 3748326.

It is an arithmetic number, because the mean of its divisors is an integer number (19015942050).

Almost surely, 2^{1989762622380} is an apocalyptic number.

1989762622380 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 1989762622380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3651060873600).

1989762622380 is an abundant number, since it is smaller than the sum of its proper divisors (5312359124820).

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

1989762622380 is a wasteful number, since it uses less digits than its factorization.

1989762622380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575010 (or 575002 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 63.

The spelling of 1989762622380 in words is "one trillion, nine hundred eighty-nine billion, seven hundred sixty-two million, six hundred twenty-two thousand, three hundred eighty".