158507387 has 4 divisors (see below), whose sum is σ = 159165336. Its totient is φ = 157849440.

The previous prime is 158507383. The next prime is 158507407. The reversal of 158507387 is 783705851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783705851 = 277 ⋅2829263.

It is a cyclic number.

It is not a de Polignac number, because 158507387 - 2² = 158507383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158507383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328613 + ... + 329094.

It is an arithmetic number, because the mean of its divisors is an integer number (39791334).

Almost surely, 2^158507387 is an apocalyptic number.

158507387 is a deficient number, since it is larger than the sum of its proper divisors (657949).

158507387 is an equidigital number, since it uses as much as digits as its factorization.

158507387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657948.

The product of its (nonzero) digits is 235200, while the sum is 44.

The square root of 158507387 is about 12589.9716838442. The cubic root of 158507387 is about 541.1900901746.

The spelling of 158507387 in words is "one hundred fifty-eight million, five hundred seven thousand, three hundred eighty-seven".