1618740504 has 128 divisors (see below), whose sum is σ = 4623168000. Its totient is φ = 524506752.

The previous prime is 1618740503. The next prime is 1618740517. The reversal of 1618740504 is 4050478161.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1618740503) by changing a digit.

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, 3687117 + ... + 3687555.

It is an arithmetic number, because the mean of its divisors is an integer number (36118500).

Almost surely, 2^1618740504 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 1618740504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2311584000).

1618740504 is an abundant number, since it is smaller than the sum of its proper divisors (3004427496).

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

1618740504 is a wasteful number, since it uses less digits than its factorization.

1618740504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894 (or 884 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1618740504 is about 40233.5743378587. The cubic root of 1618740504 is about 1174.1558455284.

The spelling of 1618740504 in words is "one billion, six hundred eighteen million, seven hundred forty thousand, five hundred four".