1138900237 has 8 divisors (see below), whose sum is σ = 1157296896. Its totient is φ = 1120544832.

The previous prime is 1138900157. The next prime is 1138900249. The reversal of 1138900237 is 7320098311.

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

It is a cyclic number.

It is not a de Polignac number, because 1138900237 - 2¹⁵ = 1138867469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138903237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47973 + ... + 67669.

It is an arithmetic number, because the mean of its divisors is an integer number (144662112).

Almost surely, 2^1138900237 is an apocalyptic number.

It is an amenable number.

1138900237 is a deficient number, since it is larger than the sum of its proper divisors (18396659).

1138900237 is an equidigital number, since it uses as much as digits as its factorization.

1138900237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20627.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 1138900237 is about 33747.5960180870. The cubic root of 1138900237 is about 1044.3078945492.

Adding to 1138900237 its reverse (7320098311), we get a palindrome (8458998548).

The spelling of 1138900237 in words is "one billion, one hundred thirty-eight million, nine hundred thousand, two hundred thirty-seven".