8170943478 has 16 divisors (see below), whose sum is σ = 17303174640. Its totient is φ = 2563433216.

The previous prime is 8170943477. The next prime is 8170943497. The reversal of 8170943478 is 8743490718.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 8170943478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8170943471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40053543 + ... + 40053746.

It is an arithmetic number, because the mean of its divisors is an integer number (1081448415).

Almost surely, 2^8170943478 is an apocalyptic number.

8170943478 is an abundant number, since it is smaller than the sum of its proper divisors (9132231162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8170943478 is a wasteful number, since it uses less digits than its factorization.

8170943478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80107311.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The square root of 8170943478 is about 90393.2711986904. The cubic root of 8170943478 is about 2014.1450132867.

The spelling of 8170943478 in words is "eight billion, one hundred seventy million, nine hundred forty-three thousand, four hundred seventy-eight".