8007861945 has 8 divisors (see below), whose sum is σ = 12812579136. Its totient is φ = 4270859696.

The previous prime is 8007861943. The next prime is 8007861949. The reversal of 8007861945 is 5491687008.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8007861945 - 2¹ = 8007861943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8007861894 and 8007861903.

It is not an unprimeable number, because it can be changed into a prime (8007861943) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 266928717 + ... + 266928746.

It is an arithmetic number, because the mean of its divisors is an integer number (1601572392).

Almost surely, 2^8007861945 is an apocalyptic number.

It is an amenable number.

8007861945 is a deficient number, since it is larger than the sum of its proper divisors (4804717191).

8007861945 is a wasteful number, since it uses less digits than its factorization.

8007861945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533857471.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 8007861945 is about 89486.6579161385. The cubic root of 8007861945 is about 2000.6549475818.

The spelling of 8007861945 in words is "eight billion, seven million, eight hundred sixty-one thousand, nine hundred forty-five".