997350158 has 16 divisors (see below), whose sum is σ = 1717851264. Its totient is φ = 425408760.

The previous prime is 997350157. The next prime is 997350191. The reversal of 997350158 is 851053799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997350157) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 165860 + ... + 171767.

It is an arithmetic number, because the mean of its divisors is an integer number (107365704).

Almost surely, 2^997350158 is an apocalyptic number.

997350158 is a deficient number, since it is larger than the sum of its proper divisors (720501106).

997350158 is a wasteful number, since it uses less digits than its factorization.

997350158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337847.

The product of its (nonzero) digits is 340200, while the sum is 47.

The square root of 997350158 is about 31580.8511284924. The cubic root of 997350158 is about 999.1159379980.

The spelling of 997350158 in words is "nine hundred ninety-seven million, three hundred fifty thousand, one hundred fifty-eight".