3642578045 has 4 divisors (see below), whose sum is σ = 4371093660. Its totient is φ = 2914062432.

The previous prime is 3642578041. The next prime is 3642578053. The reversal of 3642578045 is 5408752463.

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 626701156 + 3015876889 = 25034^2 + 54917^2 .

It is a cyclic number.

It is not a de Polignac number, because 3642578045 - 2² = 3642578041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3642577987 and 3642578005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3642578041) 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, 364257800 + ... + 364257809.

It is an arithmetic number, because the mean of its divisors is an integer number (1092773415).

Almost surely, 2^3642578045 is an apocalyptic number.

It is an amenable number.

3642578045 is a deficient number, since it is larger than the sum of its proper divisors (728515615).

3642578045 is an equidigital number, since it uses as much as digits as its factorization.

3642578045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728515614.

The product of its (nonzero) digits is 806400, while the sum is 44.

The square root of 3642578045 is about 60353.7740742035. The cubic root of 3642578045 is about 1538.6374135386.

The spelling of 3642578045 in words is "three billion, six hundred forty-two million, five hundred seventy-eight thousand, forty-five".