2138248998 has 24 divisors (see below), whose sum is σ = 4633942248. Its totient is φ = 712585152.

The previous prime is 2138248991. The next prime is 2138249017. The reversal of 2138248998 is 8998428312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138248991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86061 + ... + 108087.

It is an arithmetic number, because the mean of its divisors is an integer number (193080927).

Almost surely, 2^2138248998 is an apocalyptic number.

2138248998 is an abundant number, since it is smaller than the sum of its proper divisors (2495693250).

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

2138248998 is a wasteful number, since it uses less digits than its factorization.

2138248998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27428 (or 27425 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 2138248998 is about 46241.2045474596. The cubic root of 2138248998 is about 1288.3071756041.

The spelling of 2138248998 in words is "two billion, one hundred thirty-eight million, two hundred forty-eight thousand, nine hundred ninety-eight".