158322022609 has 3 divisors (see below), whose sum is σ = 158322420507. Its totient is φ = 158321624712.

The previous prime is 158322022561. The next prime is 158322022633. The reversal of 158322022609 is 906220223851.

The square root of 158322022609 is 397897.

It is a perfect power (a square), and thus also a powerful number.

158322022609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 7100590225 + 151221432384 = 84265^2 + 388872^2 .

It is not a de Polignac number, because 158322022609 - 2⁹ = 158322022097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158322022009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 198949 + ... + 596845.

It is an arithmetic number, because the mean of its divisors is an integer number (52774140169).

Almost surely, 2^158322022609 is an apocalyptic number.

158322022609 is the 397897-th square number.

158322022609 is the 198949-th centered octagonal number.

It is an amenable number.

158322022609 is a deficient number, since it is larger than the sum of its proper divisors (397898).

158322022609 is an frugal number, since it uses more digits than its factorization.

158322022609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795794 (or 397897 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 158322022609 in words is "one hundred fifty-eight billion, three hundred twenty-two million, twenty-two thousand, six hundred nine".