819952545 has 16 divisors (see below), whose sum is σ = 1333432512. Its totient is φ = 430138560.

The previous prime is 819952537. The next prime is 819952547. The reversal of 819952545 is 545259918.

It is not a de Polignac number, because 819952545 - 2³ = 819952537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 819952494 and 819952503.

It is not an unprimeable number, because it can be changed into a prime (819952547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447147 + ... + 448976.

It is an arithmetic number, because the mean of its divisors is an integer number (83339532).

Almost surely, 2^819952545 is an apocalyptic number.

It is an amenable number.

819952545 is a deficient number, since it is larger than the sum of its proper divisors (513479967).

819952545 is a wasteful number, since it uses less digits than its factorization.

819952545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896192.

The product of its digits is 648000, while the sum is 48.

The square root of 819952545 is about 28634.8135143220. The cubic root of 819952545 is about 935.9721061068.

The spelling of 819952545 in words is "eight hundred nineteen million, nine hundred fifty-two thousand, five hundred forty-five".