1197509040 has 480 divisors, whose sum is σ = 5064259200. Its totient is φ = 251983872.

The previous prime is 1197509039. The next prime is 1197509041. The reversal of 1197509040 is 409057911.

It is an interprime number because it is at equal distance from previous prime (1197509039) and next prime (1197509041).

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 = 1197508986 and 1197509004.

It is not an unprimeable number, because it can be changed into a prime (1197509041) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3210294 + ... + 3210666.

It is an arithmetic number, because the mean of its divisors is an integer number (10550540).

Almost surely, 2^1197509040 is an apocalyptic number.

1197509040 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 1197509040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2532129600).

1197509040 is an abundant number, since it is smaller than the sum of its proper divisors (3866750160).

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

1197509040 is a wasteful number, since it uses less digits than its factorization.

1197509040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 1197509040 is about 34605.0435630415. The cubic root of 1197509040 is about 1061.9227709382.

The spelling of 1197509040 in words is "one billion, one hundred ninety-seven million, five hundred nine thousand, forty".