1618002648 has 64 divisors (see below), whose sum is σ = 4497868800. Its totient is φ = 538924320.

The previous prime is 1618002647. The next prime is 1618002653. The reversal of 1618002648 is 8462008161.

1618002648 is a `hidden beast` number, since 1 + 6 + 1 + 8 + 0 + 0 + 2 + 648 = 666.

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 (1618002647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 443793 + ... + 447423.

It is an arithmetic number, because the mean of its divisors is an integer number (70279200).

Almost surely, 2^1618002648 is an apocalyptic number.

1618002648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1618002648 is an abundant number, since it is smaller than the sum of its proper divisors (2879866152).

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

1618002648 is a wasteful number, since it uses less digits than its factorization.

1618002648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5709 (or 5699 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 1618002648 is about 40224.4036375929. The cubic root of 1618002648 is about 1173.9774167641.

The spelling of 1618002648 in words is "one billion, six hundred eighteen million, two thousand, six hundred forty-eight".