1139678690 has 8 divisors (see below), whose sum is σ = 2051421660. Its totient is φ = 455871472.

The previous prime is 1139678671. The next prime is 1139678693. The reversal of 1139678690 is 968769311.

It can be written as a sum of positive squares in 2 ways, for example, as 1139535049 + 143641 = 33757^2 + 379^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1139678690² = 2597735032880232200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1139678693) 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 3 ways as a sum of consecutive naturals, for example, 56983925 + ... + 56983944.

Almost surely, 2^1139678690 is an apocalyptic number.

1139678690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1139678690 is a deficient number, since it is larger than the sum of its proper divisors (911742970).

1139678690 is a wasteful number, since it uses less digits than its factorization.

1139678690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113967876.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 1139678690 is about 33759.1275064982. The cubic root of 1139678690 is about 1044.5457729978.

The spelling of 1139678690 in words is "one billion, one hundred thirty-nine million, six hundred seventy-eight thousand, six hundred ninety".