1618938048 has 448 divisors, whose sum is σ = 5644083200. Its totient is φ = 406425600.

The previous prime is 1618938047. The next prime is 1618938049. The reversal of 1618938048 is 8408398161.

It is an interprime number because it is at equal distance from previous prime (1618938047) and next prime (1618938049).

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 1618937988 and 1618938006.

It is not an unprimeable number, because it can be changed into a prime (1618938043) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26539938 + ... + 26539998.

It is an arithmetic number, because the mean of its divisors is an integer number (12598400).

Almost surely, 2^1618938048 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 1618938048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2822041600).

1618938048 is an abundant number, since it is smaller than the sum of its proper divisors (4025145152).

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

1618938048 is a wasteful number, since it uses less digits than its factorization.

1618938048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The square root of 1618938048 is about 40236.0292275468. The cubic root of 1618938048 is about 1174.2036065309.

The spelling of 1618938048 in words is "one billion, six hundred eighteen million, nine hundred thirty-eight thousand, forty-eight".