1616620634 has 16 divisors (see below), whose sum is σ = 2445810720. Its totient is φ = 801375120.

The previous prime is 1616620583. The next prime is 1616620657. The reversal of 1616620634 is 4360266161.

It is a super-2 number, since 2×1616620634² = 5226924548549123912, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1616620594 and 1616620603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131357 + ... + 143135.

It is an arithmetic number, because the mean of its divisors is an integer number (152863170).

Almost surely, 2^1616620634 is an apocalyptic number.

1616620634 is a deficient number, since it is larger than the sum of its proper divisors (829190086).

1616620634 is a wasteful number, since it uses less digits than its factorization.

1616620634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12365.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 1616620634 is about 40207.2211673475. The cubic root of 1616620634 is about 1173.6430713320.

Adding to 1616620634 its reverse (4360266161), we get a palindrome (5976886795).

The spelling of 1616620634 in words is "one billion, six hundred sixteen million, six hundred twenty thousand, six hundred thirty-four".