9998149142 has 16 divisors (see below), whose sum is σ = 15213526272. Its totient is φ = 4927020840.

The previous prime is 9998149141. The next prime is 9998149159. The reversal of 9998149142 is 2419418999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9998149141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490853 + ... + 510815.

It is an arithmetic number, because the mean of its divisors is an integer number (950845392).

Almost surely, 2^9998149142 is an apocalyptic number.

9998149142 is a deficient number, since it is larger than the sum of its proper divisors (5215377130).

9998149142 is a wasteful number, since it uses less digits than its factorization.

9998149142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23563.

The product of its digits is 1679616, while the sum is 56.

The square root of 9998149142 is about 99990.7452817510. The cubic root of 9998149142 is about 2154.3017634079.

The spelling of 9998149142 in words is "nine billion, nine hundred ninety-eight million, one hundred forty-nine thousand, one hundred forty-two".