3645903436 has 48 divisors (see below), whose sum is σ = 7900333056. Its totient is φ = 1436408064.

The previous prime is 3645903421. The next prime is 3645903467. The reversal of 3645903436 is 6343095463.

It is a super-2 number, since 2×3645903436² = 26585223729273212192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a junction number, because it is equal to n+sod(n) for n = 3645903392 and 3645903401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68596 + ... + 109531.

It is an arithmetic number, because the mean of its divisors is an integer number (164590272).

Almost surely, 2^3645903436 is an apocalyptic number.

It is an amenable number.

3645903436 is an abundant number, since it is smaller than the sum of its proper divisors (4254429620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3645903436 is a wasteful number, since it uses less digits than its factorization.

3645903436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178198 (or 178196 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 43.

The square root of 3645903436 is about 60381.3169448961. The cubic root of 3645903436 is about 1539.1054899689.

Adding to 3645903436 its reverse (6343095463), we get a palindrome (9988998899).

The spelling of 3645903436 in words is "three billion, six hundred forty-five million, nine hundred three thousand, four hundred thirty-six".