1618366344 has 128 divisors (see below), whose sum is σ = 5035392000. Its totient is φ = 422924544.

The previous prime is 1618366303. The next prime is 1618366423. The reversal of 1618366344 is 4436638161.

It is a Harshad number since it is a multiple of its sum of digits (42).

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

It is a junction number, because it is equal to n+sod(n) for n = 1618366296 and 1618366305.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83827 + ... + 101309.

It is an arithmetic number, because the mean of its divisors is an integer number (39339000).

Almost surely, 2^1618366344 is an apocalyptic number.

1618366344 is a gapful number since it is divisible by the number (14) 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 1618366344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2517696000).

1618366344 is an abundant number, since it is smaller than the sum of its proper divisors (3417025656).

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

1618366344 is a wasteful number, since it uses less digits than its factorization.

1618366344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17547 (or 17543 counting only the distinct ones).

The product of its digits is 248832, while the sum is 42.

The square root of 1618366344 is about 40228.9242212615. The cubic root of 1618366344 is about 1174.0653727188.

The spelling of 1618366344 in words is "one billion, six hundred eighteen million, three hundred sixty-six thousand, three hundred forty-four".