819934153 has 4 divisors (see below), whose sum is σ = 855583488. Its totient is φ = 784284820.

The previous prime is 819934147. The next prime is 819934183. The reversal of 819934153 is 351439918.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-819934153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (819934103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17824633 + ... + 17824678.

It is an arithmetic number, because the mean of its divisors is an integer number (213895872).

Almost surely, 2^819934153 is an apocalyptic number.

It is an amenable number.

819934153 is a deficient number, since it is larger than the sum of its proper divisors (35649335).

819934153 is a wasteful number, since it uses less digits than its factorization.

819934153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35649334.

The product of its digits is 116640, while the sum is 43.

The square root of 819934153 is about 28634.4923649783. The cubic root of 819934153 is about 935.9651079263.

The spelling of 819934153 in words is "eight hundred nineteen million, nine hundred thirty-four thousand, one hundred fifty-three".