158881949 has 8 divisors (see below), whose sum is σ = 171808128. Its totient is φ = 146353600.

The previous prime is 158881939. The next prime is 158881967. The reversal of 158881949 is 949188851.

It is a happy number.

158881949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-158881949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158881949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158881939) 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, 98627 + ... + 100224.

It is an arithmetic number, because the mean of its divisors is an integer number (21476016).

Almost surely, 2^158881949 is an apocalyptic number.

It is an amenable number.

158881949 is a deficient number, since it is larger than the sum of its proper divisors (12926179).

158881949 is a wasteful number, since it uses less digits than its factorization.

158881949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198915.

The product of its digits is 829440, while the sum is 53.

The square root of 158881949 is about 12604.8383170908. The cubic root of 158881949 is about 541.6160425219.

The spelling of 158881949 in words is "one hundred fifty-eight million, eight hundred eighty-one thousand, nine hundred forty-nine".