2912901820 has 24 divisors (see below), whose sum is σ = 6144534144. Its totient is φ = 1159934016.

The previous prime is 2912901811. The next prime is 2912901821. The reversal of 2912901820 is 281092192.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2912901821) 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, 322099 + ... + 331018.

It is an arithmetic number, because the mean of its divisors is an integer number (256022256).

Almost surely, 2^2912901820 is an apocalyptic number.

2912901820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2912901820 is an abundant number, since it is smaller than the sum of its proper divisors (3231632324).

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

2912901820 is a wasteful number, since it uses less digits than its factorization.

2912901820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 653349 (or 653347 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 2912901820 is about 53971.3055243247. The cubic root of 2912901820 is about 1428.1547948175.

The spelling of 2912901820 in words is "two billion, nine hundred twelve million, nine hundred one thousand, eight hundred twenty".