1158228726 has 16 divisors (see below), whose sum is σ = 2321622000. Its totient is φ = 385215488.

The previous prime is 1158228719. The next prime is 1158228749. The reversal of 1158228726 is 6278228511.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212271 + ... + 217658.

It is an arithmetic number, because the mean of its divisors is an integer number (145101375).

Almost surely, 2^1158228726 is an apocalyptic number.

1158228726 is an abundant number, since it is smaller than the sum of its proper divisors (1163393274).

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

1158228726 is a wasteful number, since it uses less digits than its factorization.

1158228726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430383.

The product of its digits is 107520, while the sum is 42.

The square root of 1158228726 is about 34032.7596001265. The cubic root of 1158228726 is about 1050.1825007040.

The spelling of 1158228726 in words is "one billion, one hundred fifty-eight million, two hundred twenty-eight thousand, seven hundred twenty-six".