2161414940 has 24 divisors (see below), whose sum is σ = 4661647872. Its totient is φ = 841199040.

The previous prime is 2161414919. The next prime is 2161414943. The reversal of 2161414940 is 494141612.

It is a junction number, because it is equal to n+sod(n) for n = 2161414897 and 2161414906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161414943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1459676 + ... + 1461155.

It is an arithmetic number, because the mean of its divisors is an integer number (194235328).

Almost surely, 2^2161414940 is an apocalyptic number.

2161414940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2161414940 is an abundant number, since it is smaller than the sum of its proper divisors (2500232932).

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

2161414940 is a wasteful number, since it uses less digits than its factorization.

2161414940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920877 (or 2920875 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 2161414940 is about 46491.0199931126. The cubic root of 2161414940 is about 1292.9430112812.

The spelling of 2161414940 in words is "two billion, one hundred sixty-one million, four hundred fourteen thousand, nine hundred forty".