9741961980 has 72 divisors (see below), whose sum is σ = 29616678000. Its totient is φ = 2592049152.

The previous prime is 9741961973. The next prime is 9741961997. The reversal of 9741961980 is 891691479.

9741961980 is a `hidden beast` number, since 9 + 7 + 4 + 19 + 619 + 8 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20551 + ... + 141089.

It is an arithmetic number, because the mean of its divisors is an integer number (411342750).

Almost surely, 2^9741961980 is an apocalyptic number.

9741961980 is a gapful number since it is divisible by the number (90) 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 9741961980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14808339000).

9741961980 is an abundant number, since it is smaller than the sum of its proper divisors (19874716020).

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

9741961980 is a wasteful number, since it uses less digits than its factorization.

9741961980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121003 (or 120998 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 54.

The square root of 9741961980 is about 98701.3778019334. The cubic root of 9741961980 is about 2135.7421073779.

The spelling of 9741961980 in words is "nine billion, seven hundred forty-one million, nine hundred sixty-one thousand, nine hundred eighty".