1138587274 has 64 divisors (see below), whose sum is σ = 2091432960. Its totient is φ = 458161920.

The previous prime is 1138587271. The next prime is 1138587283. The reversal of 1138587274 is 4727858311.

It is not an unprimeable number, because it can be changed into a prime (1138587271) 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 31 ways as a sum of consecutive naturals, for example, 1157787 + ... + 1158769.

It is an arithmetic number, because the mean of its divisors is an integer number (32678640).

Almost surely, 2^1138587274 is an apocalyptic number.

1138587274 is a deficient number, since it is larger than the sum of its proper divisors (952845686).

1138587274 is a wasteful number, since it uses less digits than its factorization.

1138587274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195.

The product of its digits is 376320, while the sum is 46.

The square root of 1138587274 is about 33742.9588803353. The cubic root of 1138587274 is about 1044.2122292566.

The spelling of 1138587274 in words is "one billion, one hundred thirty-eight million, five hundred eighty-seven thousand, two hundred seventy-four".