5518494900 has 288 divisors, whose sum is σ = 18884208000. Its totient is φ = 1378529280.

The previous prime is 5518494887. The next prime is 5518494901. The reversal of 5518494900 is 94948155.

5518494900 is a `hidden beast` number, since 5 + 518 + 49 + 4 + 90 + 0 = 666.

It is a super-2 number, since 2×5518494900² = 60907571922652020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5518494901) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4975546 + ... + 4976654.

Almost surely, 2^5518494900 is an apocalyptic number.

5518494900 is a gapful number since it is divisible by the number (50) 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 5518494900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9442104000).

5518494900 is an abundant number, since it is smaller than the sum of its proper divisors (13365713100).

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

5518494900 is a wasteful number, since it uses less digits than its factorization.

5518494900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 5518494900 is about 74286.5728109730. The cubic root of 5518494900 is about 1767.1505430641.

The spelling of 5518494900 in words is "five billion, five hundred eighteen million, four hundred ninety-four thousand, nine hundred".