238290981937 has 4 divisors (see below), whose sum is σ = 240604486720. Its totient is φ = 235977477156.

The previous prime is 238290981931. The next prime is 238290982003. The reversal of 238290981937 is 739189092832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 238290981937 - 2¹⁹ = 238290457649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238290981931) 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, 1156752237 + ... + 1156752442.

It is an arithmetic number, because the mean of its divisors is an integer number (60151121680).

Almost surely, 2^238290981937 is an apocalyptic number.

It is an amenable number.

238290981937 is a deficient number, since it is larger than the sum of its proper divisors (2313504783).

238290981937 is a wasteful number, since it uses less digits than its factorization.

238290981937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313504782.

The product of its (nonzero) digits is 11757312, while the sum is 61.

The spelling of 238290981937 in words is "two hundred thirty-eight billion, two hundred ninety million, nine hundred eighty-one thousand, nine hundred thirty-seven".