1616434 has 4 divisors (see below), whose sum is σ = 2424654. Its totient is φ = 808216.

The previous prime is 1616429. The next prime is 1616437. The reversal of 1616434 is 4346161.

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

It can be written as a sum of positive squares in only one way, i.e., 815409 + 801025 = 903^2 + 895^2 .

It is a super-2 number, since 2×1616434² = 5225717752712, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1616399 and 1616408.

It is not an unprimeable number, because it can be changed into a prime (1616437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404107 + ... + 404110.

2^1616434 is an apocalyptic number.

1616434 is a deficient number, since it is larger than the sum of its proper divisors (808220).

1616434 is an equidigital number, since it uses as much as digits as its factorization.

1616434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808219.

The product of its digits is 1728, while the sum is 25.

The square root of 1616434 is about 1271.3905772814. The cubic root of 1616434 is about 117.3597905071.

The spelling of 1616434 in words is "one million, six hundred sixteen thousand, four hundred thirty-four".