149117838 has 16 divisors (see below), whose sum is σ = 301132416. Its totient is φ = 49223160.

The previous prime is 149117831. The next prime is 149117867. The reversal of 149117838 is 838711941.

It is a super-2 number, since 2×149117838² = 44472259219588488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 149117838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149117831) 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, 120028 + ... + 121263.

It is an arithmetic number, because the mean of its divisors is an integer number (18820776).

Almost surely, 2^149117838 is an apocalyptic number.

149117838 is an abundant number, since it is smaller than the sum of its proper divisors (152014578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149117838 is a wasteful number, since it uses less digits than its factorization.

149117838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241399.

The product of its digits is 48384, while the sum is 42.

The square root of 149117838 is about 12211.3814943273. The cubic root of 149117838 is about 530.2856393128.

The spelling of 149117838 in words is "one hundred forty-nine million, one hundred seventeen thousand, eight hundred thirty-eight".