158249090 has 32 divisors (see below), whose sum is σ = 302505840. Its totient is φ = 59398144.

The previous prime is 158249071. The next prime is 158249093. The reversal of 158249090 is 90942851.

It can be written as a sum of positive squares in 8 ways, for example, as 24314761 + 133934329 = 4931^2 + 11573^2 .

It is not an unprimeable number, because it can be changed into a prime (158249093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64934 + ... + 67326.

Almost surely, 2^158249090 is an apocalyptic number.

158249090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

158249090 is a deficient number, since it is larger than the sum of its proper divisors (144256750).

158249090 is a wasteful number, since it uses less digits than its factorization.

158249090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2806.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 158249090 is about 12579.7094561043. The cubic root of 158249090 is about 540.8959634487.

The spelling of 158249090 in words is "one hundred fifty-eight million, two hundred forty-nine thousand, ninety".