2101540936 has 128 divisors (see below), whose sum is σ = 4565030400. Its totient is φ = 898560000.

The previous prime is 2101540919. The next prime is 2101540943. The reversal of 2101540936 is 6390451012.

It is a junction number, because it is equal to n+sod(n) for n = 2101540898 and 2101540907.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20807286 + ... + 20807386.

It is an arithmetic number, because the mean of its divisors is an integer number (35664300).

Almost surely, 2^2101540936 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2101540936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2282515200).

2101540936 is an abundant number, since it is smaller than the sum of its proper divisors (2463489464).

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

2101540936 is a wasteful number, since it uses less digits than its factorization.

2101540936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 307 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 2101540936 is about 45842.5668565799. The cubic root of 2101540936 is about 1280.8923091271.

Adding to 2101540936 its reverse (6390451012), we get a palindrome (8491991948).

The spelling of 2101540936 in words is "two billion, one hundred one million, five hundred forty thousand, nine hundred thirty-six".