1616393 has 4 divisors (see below), whose sum is σ = 1626240. Its totient is φ = 1606548.

The previous prime is 1616359. The next prime is 1616401. The reversal of 1616393 is 3936161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1616393 is a prime.

It is a super-2 number, since 2×1616393² = 5225452660898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1612393) 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, 4673 + ... + 5006.

It is an arithmetic number, because the mean of its divisors is an integer number (406560).

2^1616393 is an apocalyptic number.

It is an amenable number.

1616393 is a deficient number, since it is larger than the sum of its proper divisors (9847).

1616393 is an equidigital number, since it uses as much as digits as its factorization.

1616393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9846.

The product of its digits is 2916, while the sum is 29.

The square root of 1616393 is about 1271.3744531018. The cubic root of 1616393 is about 117.3587982422.

The spelling of 1616393 in words is "one million, six hundred sixteen thousand, three hundred ninety-three".