1172232378 has 16 divisors (see below), whose sum is σ = 2604960960. Its totient is φ = 390744108.

The previous prime is 1172232377. The next prime is 1172232389. The reversal of 1172232378 is 8732322711.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1172232377) 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, 10853950 + ... + 10854057.

It is an arithmetic number, because the mean of its divisors is an integer number (162810060).

Almost surely, 2^1172232378 is an apocalyptic number.

1172232378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1172232378 is an abundant number, since it is smaller than the sum of its proper divisors (1432728582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1172232378 is a wasteful number, since it uses less digits than its factorization.

1172232378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21708018 (or 21708012 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 1172232378 is about 34237.8792859605. The cubic root of 1172232378 is about 1054.3979938114.

It can be divided in two parts, 11722 and 32378, that added together give a square (44100 = 210²).

The spelling of 1172232378 in words is "one billion, one hundred seventy-two million, two hundred thirty-two thousand, three hundred seventy-eight".