2101162940 has 36 divisors (see below), whose sum is σ = 4687278456. Its totient is φ = 791023872.

The previous prime is 2101162939. The next prime is 2101162949. The reversal of 2101162940 is 492611012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101162949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175982 + ... + 187541.

Almost surely, 2^2101162940 is an apocalyptic number.

2101162940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2101162940 is an abundant number, since it is smaller than the sum of its proper divisors (2586115516).

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

2101162940 is a wasteful number, since it uses less digits than its factorization.

2101162940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363566 (or 363547 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 2101162940 is about 45838.4439090159. The cubic root of 2101162940 is about 1280.8155081486.

Adding to 2101162940 its reverse (492611012), we get a palindrome (2593773952).

The spelling of 2101162940 in words is "two billion, one hundred one million, one hundred sixty-two thousand, nine hundred forty".