1616225829 has 4 divisors (see below), whose sum is σ = 2154967776. Its totient is φ = 1077483884.

The previous prime is 1616225803. The next prime is 1616225851. The reversal of 1616225829 is 9285226161.

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 not a de Polignac number, because 1616225829 - 2⁷ = 1616225701 is a prime.

It is a super-2 number, since 2×1616225829² = 5224371860653474482, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616225029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269370969 + ... + 269370974.

It is an arithmetic number, because the mean of its divisors is an integer number (538741944).

Almost surely, 2^1616225829 is an apocalyptic number.

It is an amenable number.

1616225829 is a deficient number, since it is larger than the sum of its proper divisors (538741947).

1616225829 is an equidigital number, since it uses as much as digits as its factorization.

1616225829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538741946.

The product of its digits is 103680, while the sum is 42.

The square root of 1616225829 is about 40202.3112395295. The cubic root of 1616225829 is about 1173.5475226571.

The spelling of 1616225829 in words is "one billion, six hundred sixteen million, two hundred twenty-five thousand, eight hundred twenty-nine".