1158947958 has 32 divisors (see below), whose sum is σ = 2734479360. Its totient is φ = 320446080.

The previous prime is 1158947939. The next prime is 1158947963. The reversal of 1158947958 is 8597498511.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1158947898 and 1158947907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443763 + ... + 446366.

It is an arithmetic number, because the mean of its divisors is an integer number (85452480).

Almost surely, 2^1158947958 is an apocalyptic number.

1158947958 is an abundant number, since it is smaller than the sum of its proper divisors (1575531402).

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

1158947958 is a wasteful number, since it uses less digits than its factorization.

1158947958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890172.

The product of its digits is 3628800, while the sum is 57.

The square root of 1158947958 is about 34043.3247201269. The cubic root of 1158947958 is about 1050.3998350270.

The spelling of 1158947958 in words is "one billion, one hundred fifty-eight million, nine hundred forty-seven thousand, nine hundred fifty-eight".