1620161416 has 32 divisors (see below), whose sum is σ = 3090612960. Its totient is φ = 796079232.

The previous prime is 1620161383. The next prime is 1620161441. The reversal of 1620161416 is 6141610261.

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, 160371 + ... + 170173.

It is an arithmetic number, because the mean of its divisors is an integer number (96581655).

Almost surely, 2^1620161416 is an apocalyptic number.

It is an amenable number.

1620161416 is a deficient number, since it is larger than the sum of its proper divisors (1470451544).

1620161416 is a wasteful number, since it uses less digits than its factorization.

1620161416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10165 (or 10161 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1620161416 is about 40251.2287514307. The cubic root of 1620161416 is about 1174.4992986030.

Adding to 1620161416 its reverse (6141610261), we get a palindrome (7761771677).

The spelling of 1620161416 in words is "one billion, six hundred twenty million, one hundred sixty-one thousand, four hundred sixteen".