2124689994 has 64 divisors (see below), whose sum is σ = 5400718080. Its totient is φ = 606528000.

The previous prime is 2124689989. The next prime is 2124689999. The reversal of 2124689994 is 4999864212.

2124689994 is a `hidden beast` number, since 2 + 1 + 2 + 468 + 99 + 94 = 666.

It is an interprime number because it is at equal distance from previous prime (2124689989) and next prime (2124689999).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 2124689994.

It is not an unprimeable number, because it can be changed into a prime (2124689999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 706494 + ... + 709494.

It is an arithmetic number, because the mean of its divisors is an integer number (84386220).

Almost surely, 2^2124689994 is an apocalyptic number.

2124689994 is an abundant number, since it is smaller than the sum of its proper divisors (3276028086).

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

2124689994 is a wasteful number, since it uses less digits than its factorization.

2124689994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4892 (or 4886 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 2124689994 is about 46094.3596766459. The cubic root of 2124689994 is about 1285.5782736439.

The spelling of 2124689994 in words is "two billion, one hundred twenty-four million, six hundred eighty-nine thousand, nine hundred ninety-four".