1178288397 has 64 divisors (see below), whose sum is σ = 2077286400. Its totient is φ = 650669760.

The previous prime is 1178288389. The next prime is 1178288417. The reversal of 1178288397 is 7938828711.

It is a happy number.

1178288397 is a `hidden beast` number, since 1 + 178 + 2 + 88 + 397 = 666.

It is not a de Polignac number, because 1178288397 - 2³ = 1178288389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1178288317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 303088 + ... + 306950.

It is an arithmetic number, because the mean of its divisors is an integer number (32457600).

Almost surely, 2^1178288397 is an apocalyptic number.

It is an amenable number.

1178288397 is a deficient number, since it is larger than the sum of its proper divisors (898998003).

1178288397 is a wasteful number, since it uses less digits than its factorization.

1178288397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3975 (or 3969 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 54.

The square root of 1178288397 is about 34326.2056889485. The cubic root of 1178288397 is about 1056.2106291500.

The spelling of 1178288397 in words is "one billion, one hundred seventy-eight million, two hundred eighty-eight thousand, three hundred ninety-seven".