1158609428 has 24 divisors (see below), whose sum is σ = 2039813160. Its totient is φ = 575815680.

The previous prime is 1158609401. The next prime is 1158609437. The reversal of 1158609428 is 8249068511.

It can be written as a sum of positive squares in 4 ways, for example, as 7907344 + 1150702084 = 2812^2 + 33922^2 .

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, 821588 + ... + 822996.

It is an arithmetic number, because the mean of its divisors is an integer number (84992215).

Almost surely, 2^1158609428 is an apocalyptic number.

It is an amenable number.

1158609428 is a deficient number, since it is larger than the sum of its proper divisors (881203732).

1158609428 is a wasteful number, since it uses less digits than its factorization.

1158609428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507 (or 2505 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 44.

The square root of 1158609428 is about 34038.3523102985. The cubic root of 1158609428 is about 1050.2975507434.

The spelling of 1158609428 in words is "one billion, one hundred fifty-eight million, six hundred nine thousand, four hundred twenty-eight".