1612320100 has 18 divisors (see below), whose sum is σ = 3498734834. Its totient is φ = 644928000.

The previous prime is 1612320067. The next prime is 1612320169. The reversal of 1612320100 is 10232161.

It can be written as a sum of positive squares in 3 ways, for example, as 449100864 + 1163219236 = 21192^2 + 34106^2 .

It is a super-2 number, since 2×1612320100² = 5199152209728020000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8061501 + ... + 8061700.

Almost surely, 2^1612320100 is an apocalyptic number.

1612320100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1612320100 is an abundant number, since it is smaller than the sum of its proper divisors (1886414734).

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

1612320100 is a wasteful number, since it uses less digits than its factorization.

1612320100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16123215 (or 16123208 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1612320100 is about 40153.7059310844. The cubic root of 1612320100 is about 1172.6014387531.

Adding to 1612320100 its reverse (10232161), we get a palindrome (1622552261).

It can be divided in two parts, 16 and 12320100, that multiplied together give a square (197121600 = 14040²).

The spelling of 1612320100 in words is "one billion, six hundred twelve million, three hundred twenty thousand, one hundred".