158837490 has 128 divisors (see below), whose sum is σ = 499875840. Its totient is φ = 35121600.

The previous prime is 158837467. The next prime is 158837509. The reversal of 158837490 is 94738851.

158837490 is a `hidden beast` number, since 158 + 8 + 3 + 7 + 490 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57235 + ... + 59945.

It is an arithmetic number, because the mean of its divisors is an integer number (3905280).

Almost surely, 2^158837490 is an apocalyptic number.

158837490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 158837490, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249937920).

158837490 is an abundant number, since it is smaller than the sum of its proper divisors (341038350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158837490 is a wasteful number, since it uses less digits than its factorization.

158837490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2765 (or 2759 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 158837490 is about 12603.0746248683. The cubic root of 158837490 is about 541.5655187333.

The spelling of 158837490 in words is "one hundred fifty-eight million, eight hundred thirty-seven thousand, four hundred ninety".