1616444902 has 4 divisors (see below), whose sum is σ = 2424667356. Its totient is φ = 808222450.

The previous prime is 1616444867. The next prime is 1616444903. The reversal of 1616444902 is 2094446161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2094446161 = 37 ⋅56606653.

It is a super-2 number, since 2×1616444902² = 5225788242403579208, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616444903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404111224 + ... + 404111227.

It is an arithmetic number, because the mean of its divisors is an integer number (606166839).

Almost surely, 2^1616444902 is an apocalyptic number.

1616444902 is a deficient number, since it is larger than the sum of its proper divisors (808222454).

1616444902 is an equidigital number, since it uses as much as digits as its factorization.

1616444902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808222453.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 1616444902 is about 40205.0357791160. The cubic root of 1616444902 is about 1173.6005434988.

The spelling of 1616444902 in words is "one billion, six hundred sixteen million, four hundred forty-four thousand, nine hundred two".