2646438357 has 32 divisors (see below), whose sum is σ = 3724680960. Its totient is φ = 1669178880.

The previous prime is 2646438343. The next prime is 2646438419. The reversal of 2646438357 is 7538346462.

It is not a de Polignac number, because 2646438357 - 2¹² = 2646434261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2646438307) 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, 1696744 + ... + 1698302.

It is an arithmetic number, because the mean of its divisors is an integer number (116396280).

Almost surely, 2^2646438357 is an apocalyptic number.

It is an amenable number.

2646438357 is a deficient number, since it is larger than the sum of its proper divisors (1078242603).

2646438357 is a wasteful number, since it uses less digits than its factorization.

2646438357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2013.

The product of its digits is 2903040, while the sum is 48.

The square root of 2646438357 is about 51443.5453385554. The cubic root of 2646438357 is about 1383.2072634840.

The spelling of 2646438357 in words is "two billion, six hundred forty-six million, four hundred thirty-eight thousand, three hundred fifty-seven".