1816152408 has 128 divisors (see below), whose sum is σ = 5778432000. Its totient is φ = 517743360.

The previous prime is 1816152389. The next prime is 1816152413. The reversal of 1816152408 is 8042516181.

1816152408 is a `hidden beast` number, since 18 + 1 + 615 + 24 + 0 + 8 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 859273 + ... + 861383.

It is an arithmetic number, because the mean of its divisors is an integer number (45144000).

Almost surely, 2^1816152408 is an apocalyptic number.

1816152408 is a gapful number since it is divisible by the number (18) 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 1816152408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2889216000).

1816152408 is an abundant number, since it is smaller than the sum of its proper divisors (3962279592).

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

1816152408 is a wasteful number, since it uses less digits than its factorization.

1816152408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2702 (or 2692 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 1816152408 is about 42616.3396832717. The cubic root of 1816152408 is about 1220.0681696209.

Adding to 1816152408 its reverse (8042516181), we get a palindrome (9858668589).

The spelling of 1816152408 in words is "one billion, eight hundred sixteen million, one hundred fifty-two thousand, four hundred eight".