1197778163 has 8 divisors (see below), whose sum is σ = 1269780480. Its totient is φ = 1125947520.

The previous prime is 1197778157. The next prime is 1197778243. The reversal of 1197778163 is 3618777911.

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

It is a cyclic number.

It is not a de Polignac number, because 1197778163 - 2¹⁶ = 1197712627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1197778103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28403 + ... + 56588.

It is an arithmetic number, because the mean of its divisors is an integer number (158722560).

Almost surely, 2^1197778163 is an apocalyptic number.

1197778163 is a deficient number, since it is larger than the sum of its proper divisors (72002317).

1197778163 is an equidigital number, since it uses as much as digits as its factorization.

1197778163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85837.

The product of its digits is 444528, while the sum is 50.

The square root of 1197778163 is about 34608.9318384720. The cubic root of 1197778163 is about 1062.0023156225.

The spelling of 1197778163 in words is "one billion, one hundred ninety-seven million, seven hundred seventy-eight thousand, one hundred sixty-three".