1618165248 has 240 divisors, whose sum is σ = 5244961920. Its totient is φ = 433078272.

The previous prime is 1618165193. The next prime is 1618165273. The reversal of 1618165248 is 8425618161.

It is a Harshad number since it is a multiple of its sum of digits (42).

Its product of digits (92160) is a multiple of the sum of its prime divisors (120).

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18181588 + ... + 18181676.

It is an arithmetic number, because the mean of its divisors is an integer number (21854008).

Almost surely, 2^1618165248 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 1618165248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2622480960).

1618165248 is an abundant number, since it is smaller than the sum of its proper divisors (3626796672).

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

1618165248 is an frugal number, since it uses more digits than its factorization.

1618165248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 120 counting only the distinct ones).

The product of its digits is 92160, while the sum is 42.

The square root of 1618165248 is about 40226.4247479191. The cubic root of 1618165248 is about 1174.0167414492.

The spelling of 1618165248 in words is "one billion, six hundred eighteen million, one hundred sixty-five thousand, two hundred forty-eight".