1620162300 has 288 divisors, whose sum is σ = 5219665920. Its totient is φ = 386380800.

The previous prime is 1620162289. The next prime is 1620162317. The reversal of 1620162300 is 32610261.

It is a happy number.

1620162300 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9365014 + ... + 9365186.

It is an arithmetic number, because the mean of its divisors is an integer number (18123840).

Almost surely, 2^1620162300 is an apocalyptic number.

1620162300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1620162300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2609832960).

1620162300 is an abundant number, since it is smaller than the sum of its proper divisors (3599503620).

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

1620162300 is a wasteful number, since it uses less digits than its factorization.

1620162300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1620162300 is about 40251.2397324604. The cubic root of 1620162300 is about 1174.4995122149.

Adding to 1620162300 its reverse (32610261), we get a palindrome (1652772561).

The spelling of 1620162300 in words is "one billion, six hundred twenty million, one hundred sixty-two thousand, three hundred".