158966641 has 4 divisors (see below), whose sum is σ = 158991984. Its totient is φ = 158941300.

The previous prime is 158966617. The next prime is 158966659. The reversal of 158966641 is 146669851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 158966641 - 2⁷ = 158966513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 158966591 and 158966600.

It is not an unprimeable number, because it can be changed into a prime (158966441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4446 + ... + 18376.

It is an arithmetic number, because the mean of its divisors is an integer number (39747996).

Almost surely, 2^158966641 is an apocalyptic number.

It is an amenable number.

158966641 is a deficient number, since it is larger than the sum of its proper divisors (25343).

158966641 is a wasteful number, since it uses less digits than its factorization.

158966641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25342.

The product of its digits is 311040, while the sum is 46.

The square root of 158966641 is about 12608.1973731378. The cubic root of 158966641 is about 541.7122615452.

The spelling of 158966641 in words is "one hundred fifty-eight million, nine hundred sixty-six thousand, six hundred forty-one".