158980661 has 8 divisors (see below), whose sum is σ = 181777344. Its totient is φ = 136205280.

The previous prime is 158980631. The next prime is 158980667. The reversal of 158980661 is 166089851.

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 158980661 - 2⁶ = 158980597 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158980667) 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, 16826 + ... + 24516.

It is an arithmetic number, because the mean of its divisors is an integer number (22722168).

Almost surely, 2^158980661 is an apocalyptic number.

It is an amenable number.

158980661 is a deficient number, since it is larger than the sum of its proper divisors (22796683).

158980661 is an equidigital number, since it uses as much as digits as its factorization.

158980661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10651.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 158980661 is about 12608.7533483687. The cubic root of 158980661 is about 541.7281864433.

The spelling of 158980661 in words is "one hundred fifty-eight million, nine hundred eighty thousand, six hundred sixty-one".