158813890 has 8 divisors (see below), whose sum is σ = 285865020. Its totient is φ = 63525552.

The previous prime is 158813861. The next prime is 158813891. The reversal of 158813890 is 98318851.

158813890 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 155475961 + 3337929 = 12469^2 + 1827^2 .

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

It is not an unprimeable number, because it can be changed into a prime (158813891) 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, 7940685 + ... + 7940704.

Almost surely, 2^158813890 is an apocalyptic number.

158813890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158813890 is a deficient number, since it is larger than the sum of its proper divisors (127051130).

158813890 is a wasteful number, since it uses less digits than its factorization.

158813890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15881396.

The product of its (nonzero) digits is 69120, while the sum is 43.

The square root of 158813890 is about 12602.1383106201. The cubic root of 158813890 is about 541.5386955543.

The spelling of 158813890 in words is "one hundred fifty-eight million, eight hundred thirteen thousand, eight hundred ninety".