158490890 has 8 divisors (see below), whose sum is σ = 285283620. Its totient is φ = 63396352.

The previous prime is 158490877. The next prime is 158490911. The reversal of 158490890 is 98094851.

158490890 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 147355321 + 11135569 = 12139^2 + 3337^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7924535 + ... + 7924554.

Almost surely, 2^158490890 is an apocalyptic number.

158490890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158490890 is a deficient number, since it is larger than the sum of its proper divisors (126792730).

158490890 is a wasteful number, since it uses less digits than its factorization.

158490890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15849096.

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

The square root of 158490890 is about 12589.3165024953. The cubic root of 158490890 is about 541.1713143459.

The spelling of 158490890 in words is "one hundred fifty-eight million, four hundred ninety thousand, eight hundred ninety".