1616043402 has 24 divisors (see below), whose sum is σ = 3519208836. Its totient is φ = 535945536.

The previous prime is 1616043383. The next prime is 1616043431. The reversal of 1616043402 is 2043406161.

1616043402 is a `hidden beast` number, since 1 + 616 + 0 + 4 + 3 + 40 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1587942801 + 28100601 = 39849^2 + 5301^2 .

It is a super-2 number, since 2×1616043402² = 5223192554295467208, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224323 + ... + 231414.

Almost surely, 2^1616043402 is an apocalyptic number.

1616043402 is an abundant number, since it is smaller than the sum of its proper divisors (1903165434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1616043402 is a wasteful number, since it uses less digits than its factorization.

1616043402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455942 (or 455939 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1616043402 is about 40200.0423134106. The cubic root of 1616043402 is about 1173.5033673571.

Adding to 1616043402 its reverse (2043406161), we get a palindrome (3659449563).

The spelling of 1616043402 in words is "one billion, six hundred sixteen million, forty-three thousand, four hundred two".