2238134991 has 12 divisors (see below), whose sum is σ = 3119570328. Its totient is φ = 1427215504.

The previous prime is 2238134953. The next prime is 2238135023. The reversal of 2238134991 is 1994318322.

It is not a de Polignac number, because 2238134991 - 2¹³ = 2238126799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2238134791) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 703560 + ... + 706733.

It is an arithmetic number, because the mean of its divisors is an integer number (259964194).

Almost surely, 2^2238134991 is an apocalyptic number.

2238134991 is a deficient number, since it is larger than the sum of its proper divisors (881435337).

2238134991 is a wasteful number, since it uses less digits than its factorization.

2238134991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410342 (or 1410319 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 2238134991 is about 47308.9314083504. The cubic root of 2238134991 is about 1308.0632941951.

The spelling of 2238134991 in words is "two billion, two hundred thirty-eight million, one hundred thirty-four thousand, nine hundred ninety-one".