1178221464 has 448 divisors, whose sum is σ = 4197120000. Its totient is φ = 308629440.

The previous prime is 1178221463. The next prime is 1178221477. The reversal of 1178221464 is 4641228711.

It is a happy number.

1178221464 is a `hidden beast` number, since 1 + 178 + 2 + 21 + 464 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1178221463) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 38007129 + ... + 38007159.

Almost surely, 2^1178221464 is an apocalyptic number.

1178221464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1178221464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2098560000).

1178221464 is an abundant number, since it is smaller than the sum of its proper divisors (3018898536).

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

1178221464 is an equidigital number, since it uses as much as digits as its factorization.

1178221464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95 (or 62 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 1178221464 is about 34325.2307202734. The cubic root of 1178221464 is about 1056.1906293252.

The spelling of 1178221464 in words is "one billion, one hundred seventy-eight million, two hundred twenty-one thousand, four hundred sixty-four".