1138647670 has 32 divisors (see below), whose sum is σ = 2123320320. Its totient is φ = 439175520.

The previous prime is 1138647617. The next prime is 1138647691. The reversal of 1138647670 is 767468311.

It is a super-3 number, since 3×1138647670³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 81241 + ... + 94219.

It is an arithmetic number, because the mean of its divisors is an integer number (66353760).

Almost surely, 2^1138647670 is an apocalyptic number.

1138647670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1138647670 is a deficient number, since it is larger than the sum of its proper divisors (984672650).

1138647670 is a wasteful number, since it uses less digits than its factorization.

1138647670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13300.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 1138647670 is about 33743.8538107312. The cubic root of 1138647670 is about 1044.2306922321.

The spelling of 1138647670 in words is "one billion, one hundred thirty-eight million, six hundred forty-seven thousand, six hundred seventy".