1499128138 has 8 divisors (see below), whose sum is σ = 2255173632. Its totient is φ = 747403596.

The previous prime is 1499128133. The next prime is 1499128171. The reversal of 1499128138 is 8318219941.

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

It is not an unprimeable number, because it can be changed into a prime (1499128133) 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, 1079370 + ... + 1080757.

It is an arithmetic number, because the mean of its divisors is an integer number (281896704).

Almost surely, 2^1499128138 is an apocalyptic number.

1499128138 is a deficient number, since it is larger than the sum of its proper divisors (756045494).

1499128138 is a wasteful number, since it uses less digits than its factorization.

1499128138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2160476.

The product of its digits is 124416, while the sum is 46.

The square root of 1499128138 is about 38718.5761360100. The cubic root of 1499128138 is about 1144.4924144917.

The spelling of 1499128138 in words is "one billion, four hundred ninety-nine million, one hundred twenty-eight thousand, one hundred thirty-eight".