4015645540 has 12 divisors (see below), whose sum is σ = 8432855676. Its totient is φ = 1606258208.

The previous prime is 4015645537. The next prime is 4015645559. The reversal of 4015645540 is 455465104.

It can be written as a sum of positive squares in 2 ways, for example, as 2536935424 + 1478710116 = 50368^2 + 38454^2 .

It is a super-2 number, since 2×4015645540² = 32250818205843783200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4015645496 and 4015645505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100391119 + ... + 100391158.

It is an arithmetic number, because the mean of its divisors is an integer number (702737973).

Almost surely, 2^4015645540 is an apocalyptic number.

It is an amenable number.

4015645540 is an abundant number, since it is smaller than the sum of its proper divisors (4417210136).

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

4015645540 is a wasteful number, since it uses less digits than its factorization.

4015645540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200782286 (or 200782284 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 34.

The square root of 4015645540 is about 63369.1213447054. The cubic root of 4015645540 is about 1589.4680049776.

The spelling of 4015645540 in words is "four billion, fifteen million, six hundred forty-five thousand, five hundred forty".