1616145 has 16 divisors (see below), whose sum is σ = 2605632. Its totient is φ = 855360.

The previous prime is 1616119. The next prime is 1616161. The reversal of 1616145 is 5416161.

It is not a de Polignac number, because 1616145 - 2⁵ = 1616113 is a prime.

It is a super-2 number, since 2×1616145² = 5223849322050, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2115 + ... + 2775.

It is an arithmetic number, because the mean of its divisors is an integer number (162852).

2^1616145 is an apocalyptic number.

1616145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1616145 is a deficient number, since it is larger than the sum of its proper divisors (989487).

1616145 is a wasteful number, since it uses less digits than its factorization.

1616145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832.

The product of its digits is 720, while the sum is 24.

The square root of 1616145 is about 1271.2769171192. The cubic root of 1616145 is about 117.3527958920.

It can be divided in two parts, 16 and 16145, that added together give a palindrome (16161).

The spelling of 1616145 in words is "one million, six hundred sixteen thousand, one hundred forty-five".