1197994580 has 48 divisors (see below), whose sum is σ = 2593249344. Its totient is φ = 464590080.

The previous prime is 1197994571. The next prime is 1197994619. The reversal of 1197994580 is 854997911.

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 15 ways as a sum of consecutive naturals, for example, 129179 + ... + 138141.

It is an arithmetic number, because the mean of its divisors is an integer number (54026028).

Almost surely, 2^1197994580 is an apocalyptic number.

1197994580 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 1197994580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1296624672).

1197994580 is an abundant number, since it is smaller than the sum of its proper divisors (1395254764).

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

1197994580 is a wasteful number, since it uses less digits than its factorization.

1197994580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9176 (or 9174 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 53.

The square root of 1197994580 is about 34612.0583034295. The cubic root of 1197994580 is about 1062.0662733517.

The spelling of 1197994580 in words is "one billion, one hundred ninety-seven million, nine hundred ninety-four thousand, five hundred eighty".