1138015211 has 4 divisors (see below), whose sum is σ = 1138216992. Its totient is φ = 1137813432.

The previous prime is 1138015201. The next prime is 1138015213. The reversal of 1138015211 is 1125108311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1125108311 = 6277 ⋅179243.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138015211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1138015213) 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 3 ways as a sum of consecutive naturals, for example, 92180 + ... + 103793.

It is an arithmetic number, because the mean of its divisors is an integer number (284554248).

Almost surely, 2^1138015211 is an apocalyptic number.

1138015211 is a deficient number, since it is larger than the sum of its proper divisors (201781).

1138015211 is an equidigital number, since it uses as much as digits as its factorization.

1138015211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201780.

The product of its (nonzero) digits is 240, while the sum is 23.

The square root of 1138015211 is about 33734.4810394350. The cubic root of 1138015211 is about 1044.0373179827.

The spelling of 1138015211 in words is "one billion, one hundred thirty-eight million, fifteen thousand, two hundred eleven".