1011788238 has 16 divisors (see below), whose sum is σ = 2026683216. Its totient is φ = 336744960.

The previous prime is 1011788231. The next prime is 1011788263. The reversal of 1011788238 is 8328871101.

It is a junction number, because it is equal to n+sod(n) for n = 1011788196 and 1011788205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011788231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125203 + ... + 133038.

It is an arithmetic number, because the mean of its divisors is an integer number (126667701).

Almost surely, 2^1011788238 is an apocalyptic number.

1011788238 is an abundant number, since it is smaller than the sum of its proper divisors (1014894978).

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

1011788238 is a wasteful number, since it uses less digits than its factorization.

1011788238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258899.

The product of its (nonzero) digits is 21504, while the sum is 39.

The square root of 1011788238 is about 31808.6189263225. The cubic root of 1011788238 is about 1003.9140727136.

The spelling of 1011788238 in words is "one billion, eleven million, seven hundred eighty-eight thousand, two hundred thirty-eight".