158461117 has 2 divisors, whose sum is σ = 158461118. Its totient is φ = 158461116.

The previous prime is 158461109. The next prime is 158461153. The reversal of 158461117 is 711164851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90744676 + 67716441 = 9526^2 + 8229^2 .

It is a cyclic number.

It is not a de Polignac number, because 158461117 - 2³ = 158461109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158461157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79230558 + 79230559.

It is an arithmetic number, because the mean of its divisors is an integer number (79230559).

Almost surely, 2^158461117 is an apocalyptic number.

It is an amenable number.

158461117 is a deficient number, since it is larger than the sum of its proper divisors (1).

158461117 is an equidigital number, since it uses as much as digits as its factorization.

158461117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 34.

The square root of 158461117 is about 12588.1339760903. The cubic root of 158461117 is about 541.1374253264.

The spelling of 158461117 in words is "one hundred fifty-eight million, four hundred sixty-one thousand, one hundred seventeen".