4201815327889 has 9 divisors (see below), whose sum is σ = 4232548699977. Its totient is φ = 4171303563684.

The previous prime is 4201815327887. The next prime is 4201815327971. The reversal of 4201815327889 is 9887235181024.

The square root of 4201815327889 is 2049833.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 4201815327889 - 2¹ = 4201815327887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4201815327887) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 284919414 + ... + 284934160.

Almost surely, 2^{4201815327889} is an apocalyptic number.

4201815327889 is the 2049833-rd square number.

4201815327889 is the 1024917-th centered octagonal number.

It is an amenable number.

4201815327889 is a deficient number, since it is larger than the sum of its proper divisors (30733372088).

4201815327889 is an frugal number, since it uses more digits than its factorization.

4201815327889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29772 (or 14886 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 58.

The spelling of 4201815327889 in words is "four trillion, two hundred one billion, eight hundred fifteen million, three hundred twenty-seven thousand, eight hundred eighty-nine".