16898440036 has 9 divisors (see below), whose sum is σ = 29572725049. Its totient is φ = 8449090024.

The previous prime is 16898440033. The next prime is 16898440063. The reversal of 16898440036 is 63004489861.

The square root of 16898440036 is 129994.

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

It can be written as a sum of positive squares in only one way, i.e., 2000772900 + 14897667136 = 44730^2 + 122056^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16898440033) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 227490 + ... + 292486.

Almost surely, 2^16898440036 is an apocalyptic number.

16898440036 is the 129994-th square number.

It is an amenable number.

16898440036 is a deficient number, since it is larger than the sum of its proper divisors (12674285013).

16898440036 is an frugal number, since it uses more digits than its factorization.

16898440036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129998 (or 64999 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 49.

Multiplying 16898440036 by its sum of digits (49), we get a square (828023561764 = 909958²).

The spelling of 16898440036 in words is "sixteen billion, eight hundred ninety-eight million, four hundred forty thousand, thirty-six".