158105394 has 48 divisors (see below), whose sum is σ = 358974720. Its totient is φ = 50228640.

The previous prime is 158105383. The next prime is 158105401. The reversal of 158105394 is 493501851.

It is a super-2 number, since 2×158105394² = 49994631223790472, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35272 + ... + 39500.

It is an arithmetic number, because the mean of its divisors is an integer number (7478640).

Almost surely, 2^158105394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158105394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179487360).

158105394 is an abundant number, since it is smaller than the sum of its proper divisors (200869326).

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

158105394 is a wasteful number, since it uses less digits than its factorization.

158105394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335 (or 4332 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 158105394 is about 12573.9967393029. The cubic root of 158105394 is about 540.7321960534.

It can be divided in two parts, 15 and 8105394, that added together give a square (8105409 = 2847²).

The spelling of 158105394 in words is "one hundred fifty-eight million, one hundred five thousand, three hundred ninety-four".