1194601980 has 384 divisors, whose sum is σ = 4169926656. Its totient is φ = 251596800.

The previous prime is 1194601949. The next prime is 1194601999. The reversal of 1194601980 is 891064911.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 16825345 + ... + 16825415.

It is an arithmetic number, because the mean of its divisors is an integer number (10859184).

Almost surely, 2^1194601980 is an apocalyptic number.

1194601980 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 1194601980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2084963328).

1194601980 is an abundant number, since it is smaller than the sum of its proper divisors (2975324676).

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

1194601980 is a wasteful number, since it uses less digits than its factorization.

1194601980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 1194601980 is about 34563.0146254634. The cubic root of 1194601980 is about 1061.0627705735.

The spelling of 1194601980 in words is "one billion, one hundred ninety-four million, six hundred one thousand, nine hundred eighty".