158485889 has 2 divisors, whose sum is σ = 158485890. Its totient is φ = 158485888.

The previous prime is 158485853. The next prime is 158485903. The reversal of 158485889 is 988584851.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110986225 + 47499664 = 10535^2 + 6892^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158485889 is a prime.

It is not a weakly prime, because it can be changed into another prime (158485189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79242944 + 79242945.

It is an arithmetic number, because the mean of its divisors is an integer number (79242945).

Almost surely, 2^158485889 is an apocalyptic number.

It is an amenable number.

158485889 is a deficient number, since it is larger than the sum of its proper divisors (1).

158485889 is an equidigital number, since it uses as much as digits as its factorization.

158485889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3686400, while the sum is 56.

The square root of 158485889 is about 12589.1178801376. The cubic root of 158485889 is about 541.1656222706.

The spelling of 158485889 in words is "one hundred fifty-eight million, four hundred eighty-five thousand, eight hundred eighty-nine".