300149138 has 4 divisors (see below), whose sum is σ = 450223710. Its totient is φ = 150074568.

The previous prime is 300149119. The next prime is 300149147. The reversal of 300149138 is 831941003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 831941003 = 271 ⋅3069893.

It can be written as a sum of positive squares in only one way, i.e., 296080849 + 4068289 = 17207^2 + 2017^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 300149138.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 75037283 + ... + 75037286.

Almost surely, 2^300149138 is an apocalyptic number.

300149138 is a deficient number, since it is larger than the sum of its proper divisors (150074572).

300149138 is a wasteful number, since it uses less digits than its factorization.

300149138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150074571.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 300149138 is about 17324.8127839812. The cubic root of 300149138 is about 669.5438626953.

The spelling of 300149138 in words is "three hundred million, one hundred forty-nine thousand, one hundred thirty-eight".