8619509450 has 24 divisors (see below), whose sum is σ = 16035818508. Its totient is φ = 3447044480.

The previous prime is 8619509449. The next prime is 8619509471. The reversal of 8619509450 is 549059168.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 863360689 + 7756148761 = 29383^2 + 88069^2 .

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 8619509395 and 8619509404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 247304 + ... + 279996.

Almost surely, 2^8619509450 is an apocalyptic number.

8619509450 is a deficient number, since it is larger than the sum of its proper divisors (7416309058).

8619509450 is a wasteful number, since it uses less digits than its factorization.

8619509450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37978 (or 37973 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 47.

The square root of 8619509450 is about 92841.3132716249. The cubic root of 8619509450 is about 2050.3477062404.

The spelling of 8619509450 in words is "eight billion, six hundred nineteen million, five hundred nine thousand, four hundred fifty".