1156158 has 12 divisors (see below), whose sum is σ = 2505048. Its totient is φ = 385380.

The previous prime is 1156157. The next prime is 1156171. The reversal of 1156158 is 8516511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32098 + ... + 32133.

It is an arithmetic number, because the mean of its divisors is an integer number (208754).

2^1156158 is an apocalyptic number.

1156158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1156158 is an abundant number, since it is smaller than the sum of its proper divisors (1348890).

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

1156158 is a wasteful number, since it uses less digits than its factorization.

1156158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64239 (or 64236 counting only the distinct ones).

The product of its digits is 1200, while the sum is 27.

The square root of 1156158 is about 1075.2478783983. The cubic root of 1156158 is about 104.9556275095.

It can be divided in two parts, 11 and 56158, that added together give a square (56169 = 237²).

The spelling of 1156158 in words is "one million, one hundred fifty-six thousand, one hundred fifty-eight".