158945556 has 144 divisors (see below), whose sum is σ = 480453120. Its totient is φ = 39729600.

The previous prime is 158945539. The next prime is 158945557. The reversal of 158945556 is 655549851.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158945557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 887875 + ... + 888053.

It is an arithmetic number, because the mean of its divisors is an integer number (3336480).

Almost surely, 2^158945556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158945556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240226560).

158945556 is an abundant number, since it is smaller than the sum of its proper divisors (321507564).

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

158945556 is a wasteful number, since it uses less digits than its factorization.

158945556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 233 counting only the distinct ones).

The product of its digits is 1080000, while the sum is 48.

The square root of 158945556 is about 12607.3611830549. The cubic root of 158945556 is about 541.6883099623.

The spelling of 158945556 in words is "one hundred fifty-eight million, nine hundred forty-five thousand, five hundred fifty-six".