2645406743 has 4 divisors (see below), whose sum is σ = 3023322000. Its totient is φ = 2267491488.

The previous prime is 2645406691. The next prime is 2645406763. The reversal of 2645406743 is 3476045462.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3476045462 = 2 ⋅1738022731.

It is a cyclic number.

It is not a de Polignac number, because 2645406743 - 2⁸ = 2645406487 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2645406743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2645406763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188957618 + ... + 188957631.

It is an arithmetic number, because the mean of its divisors is an integer number (755830500).

Almost surely, 2^2645406743 is an apocalyptic number.

2645406743 is a deficient number, since it is larger than the sum of its proper divisors (377915257).

2645406743 is an equidigital number, since it uses as much as digits as its factorization.

2645406743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377915256.

The product of its (nonzero) digits is 483840, while the sum is 41.

The square root of 2645406743 is about 51433.5177000368. The cubic root of 2645406743 is about 1383.0275097624.

The spelling of 2645406743 in words is "two billion, six hundred forty-five million, four hundred six thousand, seven hundred forty-three".