1158125019 has 8 divisors (see below), whose sum is σ = 1555954752. Its totient is φ = 766189320.

The previous prime is 1158125009. The next prime is 1158125027. The reversal of 1158125019 is 9105218511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1158125019 - 2⁵ = 1158124987 is a prime.

It is a super-4 number, since 4×1158125019⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1158125009) 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, 1473049 + ... + 1473834.

It is an arithmetic number, because the mean of its divisors is an integer number (194494344).

Almost surely, 2^1158125019 is an apocalyptic number.

1158125019 is a deficient number, since it is larger than the sum of its proper divisors (397829733).

1158125019 is a wasteful number, since it uses less digits than its factorization.

1158125019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2947017.

The product of its (nonzero) digits is 3600, while the sum is 33.

The square root of 1158125019 is about 34031.2359311266. The cubic root of 1158125019 is about 1050.1511555632.

The spelling of 1158125019 in words is "one billion, one hundred fifty-eight million, one hundred twenty-five thousand, nineteen".