1616131 has 4 divisors (see below), whose sum is σ = 1763064. Its totient is φ = 1469200.

The previous prime is 1616119. The next prime is 1616161. The reversal of 1616131 is 1316161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1616131 - 2⁵ = 1616099 is a prime.

It is a super-2 number, since 2×1616131² = 5223758818322, which contains 22 as substring.

It is a Duffinian number.

1616131 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1616099 and 1616108.

It is not an unprimeable number, because it can be changed into a prime (1616161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73450 + ... + 73471.

It is an arithmetic number, because the mean of its divisors is an integer number (440766).

2^1616131 is an apocalyptic number.

1616131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1616131 is a deficient number, since it is larger than the sum of its proper divisors (146933).

1616131 is a wasteful number, since it uses less digits than its factorization.

1616131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146932.

The product of its digits is 108, while the sum is 19.

The square root of 1616131 is about 1271.2714108325. The cubic root of 1616131 is about 117.3524570313.

The spelling of 1616131 in words is "one million, six hundred sixteen thousand, one hundred thirty-one".