1618372 has 36 divisors (see below), whose sum is σ = 3447360. Its totient is φ = 661584.

The previous prime is 1618369. The next prime is 1618373. The reversal of 1618372 is 2738161.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a zygodrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 1618372.

It is not an unprimeable number, because it can be changed into a prime (1618373) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4329 + ... + 4687.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^1618372 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 1618372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1723680).

1618372 is an abundant number, since it is smaller than the sum of its proper divisors (1828988).

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

1618372 is a wasteful number, since it uses less digits than its factorization.

1618372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 391 counting only the distinct ones).

The product of its digits is 2016, while the sum is 28.

The square root of 1618372 is about 1272.1525065809. The cubic root of 1618372 is about 117.4066740457.

The spelling of 1618372 in words is "one million, six hundred eighteen thousand, three hundred seventy-two".