1177783945 has 16 divisors (see below), whose sum is σ = 1522870272. Its totient is φ = 869284800.

The previous prime is 1177783939. The next prime is 1177783949. The reversal of 1177783945 is 5493877711.

It is not a de Polignac number, because 1177783945 - 2¹¹ = 1177781897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1177783892 and 1177783901.

It is not an unprimeable number, because it can be changed into a prime (1177783949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162264 + ... + 169366.

It is an arithmetic number, because the mean of its divisors is an integer number (95179392).

Almost surely, 2^1177783945 is an apocalyptic number.

It is an amenable number.

1177783945 is a deficient number, since it is larger than the sum of its proper divisors (345086327).

1177783945 is a wasteful number, since it uses less digits than its factorization.

1177783945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9672.

The product of its digits is 1481760, while the sum is 52.

The square root of 1177783945 is about 34318.8569885420. The cubic root of 1177783945 is about 1056.0598783889.

The spelling of 1177783945 in words is "one billion, one hundred seventy-seven million, seven hundred eighty-three thousand, nine hundred forty-five".