903981138 has 8 divisors (see below), whose sum is σ = 1807962288. Its totient is φ = 301327044.

The previous prime is 903981083. The next prime is 903981139. The reversal of 903981138 is 831189309.

It is a happy number.

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

903981138 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 903981138.

It is not an unprimeable number, because it can be changed into a prime (903981139) 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, 75331756 + ... + 75331767.

It is an arithmetic number, because the mean of its divisors is an integer number (225995286).

Almost surely, 2^903981138 is an apocalyptic number.

903981138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

903981138 is a wasteful number, since it uses less digits than its factorization.

903981138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150663528.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 903981138 is about 30066.2790847155. The cubic root of 903981138 is about 966.9109004492.

The spelling of 903981138 in words is "nine hundred three million, nine hundred eighty-one thousand, one hundred thirty-eight".