1197357440 has 64 divisors (see below), whose sum is σ = 2932312320. Its totient is φ = 467251200.

The previous prime is 1197357439. The next prime is 1197357449. The reversal of 1197357440 is 447537911.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1197357449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3425 + ... + 49055.

It is an arithmetic number, because the mean of its divisors is an integer number (45817380).

Almost surely, 2^1197357440 is an apocalyptic number.

1197357440 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 1197357440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1466156160).

1197357440 is an abundant number, since it is smaller than the sum of its proper divisors (1734954880).

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

1197357440 is an equidigital number, since it uses as much as digits as its factorization.

1197357440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45691 (or 45679 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 1197357440 is about 34602.8530615613. The cubic root of 1197357440 is about 1061.8779572790.

The spelling of 1197357440 in words is "one billion, one hundred ninety-seven million, three hundred fifty-seven thousand, four hundred forty".