158008946 has 4 divisors (see below), whose sum is σ = 237013422. Its totient is φ = 79004472.

The previous prime is 158008943. The next prime is 158008969. The reversal of 158008946 is 649800851.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 111619225 + 46389721 = 10565^2 + 6811^2 .

It is not an unprimeable number, because it can be changed into a prime (158008943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39502235 + ... + 39502238.

Almost surely, 2^158008946 is an apocalyptic number.

158008946 is a deficient number, since it is larger than the sum of its proper divisors (79004476).

158008946 is an equidigital number, since it uses as much as digits as its factorization.

158008946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79004475.

The product of its (nonzero) digits is 69120, while the sum is 41.

The square root of 158008946 is about 12570.1609377128. The cubic root of 158008946 is about 540.6222205789.

The spelling of 158008946 in words is "one hundred fifty-eight million, eight thousand, nine hundred forty-six".