1154437158 has 64 divisors (see below), whose sum is σ = 2720793600. Its totient is φ = 326382336.

The previous prime is 1154437157. The next prime is 1154437177. The reversal of 1154437158 is 8517344511.

It is a super-2 number, since 2×1154437158² = 2665450303542233928, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154437153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 196735 + ... + 202517.

It is an arithmetic number, because the mean of its divisors is an integer number (42512400).

Almost surely, 2^1154437158 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1154437158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1360396800).

1154437158 is an abundant number, since it is smaller than the sum of its proper divisors (1566356442).

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

1154437158 is an equidigital number, since it uses as much as digits as its factorization.

1154437158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5906 (or 5892 counting only the distinct ones).

The product of its digits is 67200, while the sum is 39.

The square root of 1154437158 is about 33977.0092562603. The cubic root of 1154437158 is about 1049.0352917044.

The spelling of 1154437158 in words is "one billion, one hundred fifty-four million, four hundred thirty-seven thousand, one hundred fifty-eight".