450739019641 has 9 divisors (see below), whose sum is σ = 451968957871. Its totient is φ = 449512424824.

The previous prime is 450739019611. The next prime is 450739019657. The reversal of 450739019641 is 146910937054.

The square root of 450739019641 is 671371.

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., 366534587241 + 84204432400 = 605421^2 + 290180^2 .

It is a de Polignac number, because none of the positive numbers 2^k-450739019641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (450739019611) 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, 341727180 + ... + 341728498.

Almost surely, 2^450739019641 is an apocalyptic number.

450739019641 is the 671371-st square number.

450739019641 is the 335686-th centered octagonal number.

It is an amenable number.

450739019641 is a deficient number, since it is larger than the sum of its proper divisors (1229938230).

450739019641 is an frugal number, since it uses more digits than its factorization.

450739019641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3656 (or 1828 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 49.

Multiplying 450739019641 by its sum of digits (49), we get a square (22086211962409 = 4699597²).

The spelling of 450739019641 in words is "four hundred fifty billion, seven hundred thirty-nine million, nineteen thousand, six hundred forty-one".