158671505 has 16 divisors (see below), whose sum is σ = 196789824. Its totient is φ = 122740800.

The previous prime is 158671501. The next prime is 158671537. The reversal of 158671505 is 505176851.

It is a happy number.

It is not a de Polignac number, because 158671505 - 2² = 158671501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (158671501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18062 + ... + 25368.

It is an arithmetic number, because the mean of its divisors is an integer number (12299364).

Almost surely, 2^158671505 is an apocalyptic number.

It is an amenable number.

158671505 is a deficient number, since it is larger than the sum of its proper divisors (38118319).

158671505 is a wasteful number, since it uses less digits than its factorization.

158671505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7456.

The product of its (nonzero) digits is 42000, while the sum is 38.

The square root of 158671505 is about 12596.4878041460. The cubic root of 158671505 is about 541.3768078627.

The spelling of 158671505 in words is "one hundred fifty-eight million, six hundred seventy-one thousand, five hundred five".