2146782406 has 16 divisors (see below), whose sum is σ = 3412708416. Its totient is φ = 1009328256.

The previous prime is 2146782401. The next prime is 2146782433. The reversal of 2146782406 is 6042876412.

It is a happy number.

It is a super-2 number, since 2×2146782406² = 9217349397422297672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2146782401) 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, 9715 + ... + 66241.

It is an arithmetic number, because the mean of its divisors is an integer number (213294276).

Almost surely, 2^2146782406 is an apocalyptic number.

2146782406 is a deficient number, since it is larger than the sum of its proper divisors (1265926010).

2146782406 is a wasteful number, since it uses less digits than its factorization.

2146782406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57663.

The product of its (nonzero) digits is 129024, while the sum is 40.

The square root of 2146782406 is about 46333.3832781505. The cubic root of 2146782406 is about 1290.0187097421.

The spelling of 2146782406 in words is "two billion, one hundred forty-six million, seven hundred eighty-two thousand, four hundred six".