819428950 has 12 divisors (see below), whose sum is σ = 1524137940. Its totient is φ = 327771560.

The previous prime is 819428893. The next prime is 819428957. The reversal of 819428950 is 59824918.

It is a self number, because there is not a number n which added to its sum of digits gives 819428950.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819428957) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8194240 + ... + 8194339.

It is an arithmetic number, because the mean of its divisors is an integer number (127011495).

Almost surely, 2^819428950 is an apocalyptic number.

819428950 is a deficient number, since it is larger than the sum of its proper divisors (704708990).

819428950 is a wasteful number, since it uses less digits than its factorization.

819428950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16388591 (or 16388586 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 46.

The square root of 819428950 is about 28625.6694244868. The cubic root of 819428950 is about 935.7728365803.

The spelling of 819428950 in words is "eight hundred nineteen million, four hundred twenty-eight thousand, nine hundred fifty".