1178738540 has 48 divisors (see below), whose sum is σ = 2832017664. Its totient is φ = 403704000.

The previous prime is 1178738531. The next prime is 1178738551. The reversal of 1178738540 is 458378711.

It is a junction number, because it is equal to n+sod(n) for n = 1178738491 and 1178738500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143135 + ... + 151145.

It is an arithmetic number, because the mean of its divisors is an integer number (59000368).

Almost surely, 2^1178738540 is an apocalyptic number.

1178738540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1178738540 is an abundant number, since it is smaller than the sum of its proper divisors (1653279124).

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

1178738540 is a wasteful number, since it uses less digits than its factorization.

1178738540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9078 (or 9076 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 44.

The square root of 1178738540 is about 34332.7619046298. The cubic root of 1178738540 is about 1056.3451138512.

The spelling of 1178738540 in words is "one billion, one hundred seventy-eight million, seven hundred thirty-eight thousand, five hundred forty".