2645537045 has 4 divisors (see below), whose sum is σ = 3174644460. Its totient is φ = 2116429632.

The previous prime is 2645537039. The next prime is 2645537057. The reversal of 2645537045 is 5407355462.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 371487076 + 2274049969 = 19274^2 + 47687^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645537045 - 2¹⁰ = 2645536021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2645536993 and 2645537011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264553700 + ... + 264553709.

It is an arithmetic number, because the mean of its divisors is an integer number (793661115).

Almost surely, 2^2645537045 is an apocalyptic number.

It is an amenable number.

2645537045 is a deficient number, since it is larger than the sum of its proper divisors (529107415).

2645537045 is an equidigital number, since it uses as much as digits as its factorization.

2645537045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529107414.

The product of its (nonzero) digits is 504000, while the sum is 41.

The square root of 2645537045 is about 51434.7843876107. The cubic root of 2645537045 is about 1383.0502168304.

The spelling of 2645537045 in words is "two billion, six hundred forty-five million, five hundred thirty-seven thousand, forty-five".