158281738 has 16 divisors (see below), whose sum is σ = 241465824. Its totient is φ = 77798160.

The previous prime is 158281729. The next prime is 158281741. The reversal of 158281738 is 837182851.

It is a junction number, because it is equal to n+sod(n) for n = 158281694 and 158281703.

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, 87681 + ... + 89467.

It is an arithmetic number, because the mean of its divisors is an integer number (15091614).

Almost surely, 2^158281738 is an apocalyptic number.

158281738 is a deficient number, since it is larger than the sum of its proper divisors (83184086).

158281738 is a wasteful number, since it uses less digits than its factorization.

158281738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2517.

The product of its digits is 107520, while the sum is 43.

The square root of 158281738 is about 12581.0070344150. The cubic root of 158281738 is about 540.9331578851.

The spelling of 158281738 in words is "one hundred fifty-eight million, two hundred eighty-one thousand, seven hundred thirty-eight".