1197037440 has 384 divisors, whose sum is σ = 4410806400. Its totient is φ = 310044672.

The previous prime is 1197037421. The next prime is 1197037447. The reversal of 1197037440 is 447307911.

1197037440 is a `hidden beast` number, since 119 + 70 + 37 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1197037395 and 1197037404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197037447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6687271 + ... + 6687449.

It is an arithmetic number, because the mean of its divisors is an integer number (11486475).

Almost surely, 2^1197037440 is an apocalyptic number.

1197037440 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 1197037440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2205403200).

1197037440 is an abundant number, since it is smaller than the sum of its proper divisors (3213768960).

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

1197037440 is an equidigital number, since it uses as much as digits as its factorization.

1197037440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 1197037440 is about 34598.2288564025. The cubic root of 1197037440 is about 1061.7833513825.

The spelling of 1197037440 in words is "one billion, one hundred ninety-seven million, thirty-seven thousand, four hundred forty".