819323267642 has 32 divisors (see below), whose sum is σ = 1346768130240. Its totient is φ = 370737800320.

The previous prime is 819323267599. The next prime is 819323267657. The reversal of 819323267642 is 246762323918.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26583413 + ... + 26614215.

It is an arithmetic number, because the mean of its divisors is an integer number (42086504070).

Almost surely, 2^819323267642 is an apocalyptic number.

819323267642 is a deficient number, since it is larger than the sum of its proper divisors (527444862598).

819323267642 is a wasteful number, since it uses less digits than its factorization.

819323267642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36238.

The product of its digits is 5225472, while the sum is 53.

The spelling of 819323267642 in words is "eight hundred nineteen billion, three hundred twenty-three million, two hundred sixty-seven thousand, six hundred forty-two".