1178438064 has 80 divisors (see below), whose sum is σ = 3211401600. Its totient is φ = 371340288.

The previous prime is 1178438059. The next prime is 1178438081. The reversal of 1178438064 is 4608348711.

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, 539727 + ... + 541905.

It is an arithmetic number, because the mean of its divisors is an integer number (40142520).

Almost surely, 2^1178438064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1178438064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1605700800).

1178438064 is an abundant number, since it is smaller than the sum of its proper divisors (2032963536).

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

1178438064 is a wasteful number, since it uses less digits than its factorization.

1178438064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2802 (or 2796 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 1178438064 is about 34328.3856888144. The cubic root of 1178438064 is about 1056.2553474561.

It can be divided in two parts, 11784 and 38064, that multiplied together give a triangular number (448546176 = T₂₉₉₅₁).

The spelling of 1178438064 in words is "one billion, one hundred seventy-eight million, four hundred thirty-eight thousand, sixty-four".