18274654890 has 128 divisors (see below), whose sum is σ = 50127517440. Its totient is φ = 4734720000.

The previous prime is 18274654823. The next prime is 18274654891. The reversal of 18274654890 is 9845647281.

It is a happy number.

18274654890 is a `hidden beast` number, since 1 + 8 + 2 + 7 + 4 + 6 + 548 + 90 = 666.

It is a super-2 number, since 2×18274654890² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (18274654891) 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, 2775282 + ... + 2781858.

It is an arithmetic number, because the mean of its divisors is an integer number (391621230).

Almost surely, 2^18274654890 is an apocalyptic number.

18274654890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18274654890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25063758720).

18274654890 is an abundant number, since it is smaller than the sum of its proper divisors (31852862550).

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

18274654890 is a wasteful number, since it uses less digits than its factorization.

18274654890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6885 (or 6879 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 18274654890 in words is "eighteen billion, two hundred seventy-four million, six hundred fifty-four thousand, eight hundred ninety".