998175149 has 4 divisors (see below), whose sum is σ = 1000176000. Its totient is φ = 996174300.

The previous prime is 998175133. The next prime is 998175151. The reversal of 998175149 is 941571899.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 998175149 - 2⁴ = 998175133 is a prime.

It is a Duffinian number.

998175149 is a modest number, since divided by 175149 gives 998 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 998175149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (998175109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 999677 + ... + 1000674.

It is an arithmetic number, because the mean of its divisors is an integer number (250044000).

Almost surely, 2^998175149 is an apocalyptic number.

It is an amenable number.

998175149 is a deficient number, since it is larger than the sum of its proper divisors (2000851).

998175149 is a wasteful number, since it uses less digits than its factorization.

998175149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000850.

The product of its digits is 816480, while the sum is 53.

The square root of 998175149 is about 31593.9099986057. The cubic root of 998175149 is about 999.3913459487.

The spelling of 998175149 in words is "nine hundred ninety-eight million, one hundred seventy-five thousand, one hundred forty-nine".