149551798 has 8 divisors (see below), whose sum is σ = 244721160. Its totient is φ = 67978080.

The previous prime is 149551769. The next prime is 149551799. The reversal of 149551798 is 897155941.

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 (149551799) 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 3 ways as a sum of consecutive naturals, for example, 3398883 + ... + 3398926.

It is an arithmetic number, because the mean of its divisors is an integer number (30590145).

Almost surely, 2^149551798 is an apocalyptic number.

149551798 is a deficient number, since it is larger than the sum of its proper divisors (95169362).

149551798 is a wasteful number, since it uses less digits than its factorization.

149551798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6797822.

The product of its digits is 453600, while the sum is 49.

The square root of 149551798 is about 12229.1372549334. The cubic root of 149551798 is about 530.7995502938.

The spelling of 149551798 in words is "one hundred forty-nine million, five hundred fifty-one thousand, seven hundred ninety-eight".