1138215782 has 12 divisors (see below), whose sum is σ = 1876645428. Its totient is φ = 517370700.

The previous prime is 1138215761. The next prime is 1138215811. The reversal of 1138215782 is 2875128311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2351444 + ... + 2351927.

It is an arithmetic number, because the mean of its divisors is an integer number (156387119).

Almost surely, 2^1138215782 is an apocalyptic number.

1138215782 is a deficient number, since it is larger than the sum of its proper divisors (738429646).

1138215782 is a wasteful number, since it uses less digits than its factorization.

1138215782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4703395 (or 4703384 counting only the distinct ones).

The product of its digits is 26880, while the sum is 38.

The square root of 1138215782 is about 33737.4536976340. The cubic root of 1138215782 is about 1044.0986502935.

The spelling of 1138215782 in words is "one billion, one hundred thirty-eight million, two hundred fifteen thousand, seven hundred eighty-two".