1158179840 has 88 divisors (see below), whose sum is σ = 2868289152. Its totient is φ = 448266240.

The previous prime is 1158179807. The next prime is 1158179843. The reversal of 1158179840 is 489718511.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1158179791 and 1158179800.

It is not an unprimeable number, because it can be changed into a prime (1158179843) 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, 155072 + ... + 162368.

Almost surely, 2^1158179840 is an apocalyptic number.

1158179840 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 1158179840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1434144576).

1158179840 is an abundant number, since it is smaller than the sum of its proper divisors (1710109312).

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

1158179840 is an equidigital number, since it uses as much as digits as its factorization.

1158179840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7353 (or 7335 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 44.

The square root of 1158179840 is about 34032.0413728004. The cubic root of 1158179840 is about 1050.1677252850.

The spelling of 1158179840 in words is "one billion, one hundred fifty-eight million, one hundred seventy-nine thousand, eight hundred forty".