1613172 has 48 divisors (see below), whose sum is σ = 4181184. Its totient is φ = 484000.

The previous prime is 1613153. The next prime is 1613173. The reversal of 1613172 is 2713161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15922 + ... + 16022.

It is an arithmetic number, because the mean of its divisors is an integer number (87108).

2^1613172 is an apocalyptic number.

1613172 is a gapful number since it is divisible by the number (12) 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 1613172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2090592).

1613172 is an abundant number, since it is smaller than the sum of its proper divisors (2568012).

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

1613172 is a wasteful number, since it uses less digits than its factorization.

1613172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 117 counting only the distinct ones).

The product of its digits is 252, while the sum is 21.

The square root of 1613172 is about 1270.1070820998. The cubic root of 1613172 is about 117.2807924484.

It can be divided in two parts, 161 and 3172, that added together give a palindrome (3333).

The spelling of 1613172 in words is "one million, six hundred thirteen thousand, one hundred seventy-two".