1170640778 has 8 divisors (see below), whose sum is σ = 1756155168. Its totient is φ = 585255724.

The previous prime is 1170640777. The next prime is 1170640799. The reversal of 1170640778 is 8770460711.

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

It is a super-2 number, since 2×1170640778² = 2740799662232890568, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1170640777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5126 + ... + 48657.

It is an arithmetic number, because the mean of its divisors is an integer number (219519396).

Almost surely, 2^1170640778 is an apocalyptic number.

1170640778 is a deficient number, since it is larger than the sum of its proper divisors (585514390).

1170640778 is a wasteful number, since it uses less digits than its factorization.

1170640778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64668.

The product of its (nonzero) digits is 65856, while the sum is 41.

The square root of 1170640778 is about 34214.6281289159. The cubic root of 1170640778 is about 1053.9205742688.

The spelling of 1170640778 in words is "one billion, one hundred seventy million, six hundred forty thousand, seven hundred seventy-eight".