1620101260 has 12 divisors (see below), whose sum is σ = 3402212688. Its totient is φ = 648040496.

The previous prime is 1620101221. The next prime is 1620101279. The reversal of 1620101260 is 621010261.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40502512 + ... + 40502551.

It is an arithmetic number, because the mean of its divisors is an integer number (283517724).

Almost surely, 2^1620101260 is an apocalyptic number.

1620101260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1620101260 is an abundant number, since it is smaller than the sum of its proper divisors (1782111428).

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

1620101260 is a wasteful number, since it uses less digits than its factorization.

1620101260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81005072 (or 81005070 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1620101260 is about 40250.4814878033. The cubic root of 1620101260 is about 1174.4847621802.

Subtracting from 1620101260 its reverse (621010261), we obtain a palindrome (999090999).

The spelling of 1620101260 in words is "one billion, six hundred twenty million, one hundred one thousand, two hundred sixty".