498981816 has 64 divisors (see below), whose sum is σ = 1391162400. Its totient is φ = 165715200.

The previous prime is 498981787. The next prime is 498981817. The reversal of 498981816 is 618189894.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (498981817) 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, 56586 + ... + 64806.

Almost surely, 2^498981816 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 498981816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (695581200).

498981816 is an abundant number, since it is smaller than the sum of its proper divisors (892180584).

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

498981816 is a wasteful number, since it uses less digits than its factorization.

498981816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8517 (or 8507 counting only the distinct ones).

The product of its digits is 995328, while the sum is 54.

The square root of 498981816 is about 22337.9008861621. The cubic root of 498981816 is about 793.1614044175.

The spelling of 498981816 in words is "four hundred ninety-eight million, nine hundred eighty-one thousand, eight hundred sixteen".