8145772408 has 8 divisors (see below), whose sum is σ = 15273323280. Its totient is φ = 4072886200.

The previous prime is 8145772331. The next prime is 8145772469. The reversal of 8145772408 is 8042775418.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 509110768 + ... + 509110783.

It is an arithmetic number, because the mean of its divisors is an integer number (1909165410).

Almost surely, 2^8145772408 is an apocalyptic number.

It is an amenable number.

8145772408 is a deficient number, since it is larger than the sum of its proper divisors (7127550872).

8145772408 is a wasteful number, since it uses less digits than its factorization.

8145772408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1018221557 (or 1018221553 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 46.

The square root of 8145772408 is about 90253.9329226156. The cubic root of 8145772408 is about 2012.0746553119.

The spelling of 8145772408 in words is "eight billion, one hundred forty-five million, seven hundred seventy-two thousand, four hundred eight".