149869198 has 8 divisors (see below), whose sum is σ = 224887320. Its totient is φ = 74906760.

The previous prime is 149869193. The next prime is 149869231. The reversal of 149869198 is 891968941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149869193) 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, 6373 + ... + 18448.

It is an arithmetic number, because the mean of its divisors is an integer number (28110915).

Almost surely, 2^149869198 is an apocalyptic number.

149869198 is a deficient number, since it is larger than the sum of its proper divisors (75018122).

149869198 is a wasteful number, since it uses less digits than its factorization.

149869198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27842.

The product of its digits is 1119744, while the sum is 55.

The square root of 149869198 is about 12242.1075799880. The cubic root of 149869198 is about 531.1747976042.

The spelling of 149869198 in words is "one hundred forty-nine million, eight hundred sixty-nine thousand, one hundred ninety-eight".