1158406326 has 384 divisors, whose sum is σ = 3595468800. Its totient is φ = 269438400.

The previous prime is 1158406303. The next prime is 1158406351. The reversal of 1158406326 is 6236048511.

It is a happy number.

1158406326 is a `hidden beast` number, since 1 + 15 + 8 + 4 + 0 + 632 + 6 = 666.

It is a super-2 number, since 2×1158406326² = 2683810432233636552, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 26939661 + ... + 26939703.

It is an arithmetic number, because the mean of its divisors is an integer number (9363200).

Almost surely, 2^1158406326 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1158406326, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1797734400).

1158406326 is an abundant number, since it is smaller than the sum of its proper divisors (2437062474).

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

1158406326 is a wasteful number, since it uses less digits than its factorization.

1158406326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1158406326 is about 34035.3687507569. The cubic root of 1158406326 is about 1050.2361754447.

The spelling of 1158406326 in words is "one billion, one hundred fifty-eight million, four hundred six thousand, three hundred twenty-six".