2912632821 has 24 divisors (see below), whose sum is σ = 4919977920. Its totient is φ = 1625654016.

The previous prime is 2912632799. The next prime is 2912632823. The reversal of 2912632821 is 1282362192.

It is a happy number.

2912632821 is a `hidden beast` number, since 2 + 9 + 12 + 632 + 8 + 2 + 1 = 666.

It is not a de Polignac number, because 2912632821 - 2¹⁰ = 2912631797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2912632823) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 534876 + ... + 540293.

It is an arithmetic number, because the mean of its divisors is an integer number (204999080).

Almost surely, 2^2912632821 is an apocalyptic number.

2912632821 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2912632821 is a deficient number, since it is larger than the sum of its proper divisors (2007345099).

2912632821 is a wasteful number, since it uses less digits than its factorization.

2912632821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075225 (or 1075222 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 2912632821 is about 53968.8134110803. The cubic root of 2912632821 is about 1428.1108313220.

The spelling of 2912632821 in words is "two billion, nine hundred twelve million, six hundred thirty-two thousand, eight hundred twenty-one".