2146815144 has 32 divisors (see below), whose sum is σ = 5963376000. Its totient is φ = 715604976.

The previous prime is 2146815137. The next prime is 2146815157. The reversal of 2146815144 is 4415186412.

2146815144 is a `hidden beast` number, since 2 + 1 + 468 + 151 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2146815099 and 2146815108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4969264 + ... + 4969695.

It is an arithmetic number, because the mean of its divisors is an integer number (186355500).

Almost surely, 2^2146815144 is an apocalyptic number.

2146815144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2146815144 is an abundant number, since it is smaller than the sum of its proper divisors (3816560856).

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

2146815144 is a wasteful number, since it uses less digits than its factorization.

2146815144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9938974 (or 9938964 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 2146815144 is about 46333.7365641926. The cubic root of 2146815144 is about 1290.0252672174.

The spelling of 2146815144 in words is "two billion, one hundred forty-six million, eight hundred fifteen thousand, one hundred forty-four".