158640745 has 8 divisors (see below), whose sum is σ = 194419584. Its totient is φ = 124212144.

The previous prime is 158640743. The next prime is 158640761. The reversal of 158640745 is 547046851.

158640745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 158640745 - 2¹ = 158640743 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158640698 and 158640707.

It is not an unprimeable number, because it can be changed into a prime (158640743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337299 + ... + 337768.

It is an arithmetic number, because the mean of its divisors is an integer number (24302448).

Almost surely, 2^158640745 is an apocalyptic number.

It is an amenable number.

158640745 is a deficient number, since it is larger than the sum of its proper divisors (35778839).

158640745 is an equidigital number, since it uses as much as digits as its factorization.

158640745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675119.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 158640745 is about 12595.2667697036. The cubic root of 158640745 is about 541.3418218984.

The spelling of 158640745 in words is "one hundred fifty-eight million, six hundred forty thousand, seven hundred forty-five".