1183140640 has 96 divisors (see below), whose sum is σ = 3209855040. Its totient is φ = 407577600.

The previous prime is 1183140589. The next prime is 1183140641. The reversal of 1183140640 is 460413811.

It is a junction number, because it is equal to n+sod(n) for n = 1183140599 and 1183140608.

It is not an unprimeable number, because it can be changed into a prime (1183140641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15750 + ... + 51130.

It is an arithmetic number, because the mean of its divisors is an integer number (33435990).

Almost surely, 2^1183140640 is an apocalyptic number.

1183140640 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 1183140640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1604927520).

1183140640 is an abundant number, since it is smaller than the sum of its proper divisors (2026714400).

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

1183140640 is a wasteful number, since it uses less digits than its factorization.

1183140640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35426 (or 35418 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1183140640 is about 34396.8114801358. The cubic root of 1183140640 is about 1057.6584839981.

The spelling of 1183140640 in words is "one billion, one hundred eighty-three million, one hundred forty thousand, six hundred forty".