1613940 has 48 divisors (see below), whose sum is σ = 4647552. Its totient is φ = 418176.

The previous prime is 1613921. The next prime is 1613947. The reversal of 1613940 is 493161.

It is a self number, because there is not a number n which added to its sum of digits gives 1613940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613947) 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, 1857 + ... + 2583.

It is an arithmetic number, because the mean of its divisors is an integer number (96824).

2^1613940 is an apocalyptic number.

1613940 is a gapful number since it is divisible by the number (10) 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 1613940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2323776).

1613940 is an abundant number, since it is smaller than the sum of its proper divisors (3033612).

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

1613940 is a wasteful number, since it uses less digits than its factorization.

1613940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 1613940 is about 1270.4093828369. The cubic root of 1613940 is about 117.2994012015.

The spelling of 1613940 in words is "one million, six hundred thirteen thousand, nine hundred forty".