1197973800 has 240 divisors, whose sum is σ = 4221900540. Its totient is φ = 314772480.

The previous prime is 1197973783. The next prime is 1197973801. The reversal of 1197973800 is 83797911.

It can be written as a sum of positive squares in 6 ways, for example, as 109369764 + 1088604036 = 10458^2 + 32994^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1197973801) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1182094 + ... + 1183106.

Almost surely, 2^1197973800 is an apocalyptic number.

1197973800 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 1197973800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2110950270).

1197973800 is an abundant number, since it is smaller than the sum of its proper divisors (3023926740).

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

1197973800 is a wasteful number, since it uses less digits than its factorization.

1197973800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114 (or 1096 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 45.

The square root of 1197973800 is about 34611.7581177264. The cubic root of 1197973800 is about 1062.0601325714.

The spelling of 1197973800 in words is "one billion, one hundred ninety-seven million, nine hundred seventy-three thousand, eight hundred".