900006157198 has 16 divisors (see below), whose sum is σ = 1362719563920. Its totient is φ = 445768272000.

The previous prime is 900006157187. The next prime is 900006157199. The reversal of 900006157198 is 891751600009.

It is a happy number.

It is a super-2 number, since 2×900006157198² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (900006157199) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427798 + ... + 1408198.

It is an arithmetic number, because the mean of its divisors is an integer number (85169972745).

Almost surely, 2^900006157198 is an apocalyptic number.

900006157198 is a deficient number, since it is larger than the sum of its proper divisors (462713406722).

900006157198 is a wasteful number, since it uses less digits than its factorization.

900006157198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984723.

The product of its (nonzero) digits is 136080, while the sum is 46.

The spelling of 900006157198 in words is "nine hundred billion, six million, one hundred fifty-seven thousand, one hundred ninety-eight".