149896138 has 16 divisors (see below), whose sum is σ = 257555520. Its totient is φ = 64093536.

The previous prime is 149896079. The next prime is 149896147. The reversal of 149896138 is 831698941.

It is a junction number, because it is equal to n+sod(n) for n = 149896091 and 149896100.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5883 + ... + 18286.

It is an arithmetic number, because the mean of its divisors is an integer number (16097220).

Almost surely, 2^149896138 is an apocalyptic number.

149896138 is a deficient number, since it is larger than the sum of its proper divisors (107659382).

149896138 is a wasteful number, since it uses less digits than its factorization.

149896138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24621.

The product of its digits is 373248, while the sum is 49.

The square root of 149896138 is about 12243.2078312834. The cubic root of 149896138 is about 531.2066231158.

The spelling of 149896138 in words is "one hundred forty-nine million, eight hundred ninety-six thousand, one hundred thirty-eight".