4178551945 has 4 divisors (see below), whose sum is σ = 5014262340. Its totient is φ = 3342841552.

The previous prime is 4178551931. The next prime is 4178551963. The reversal of 4178551945 is 5491558714.

4178551945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 419881081 + 3758670864 = 20491^2 + 61308^2 .

It is a cyclic number.

It is not a de Polignac number, because 4178551945 - 2¹⁹ = 4178027657 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417855190 + ... + 417855199.

It is an arithmetic number, because the mean of its divisors is an integer number (1253565585).

Almost surely, 2^4178551945 is an apocalyptic number.

It is an amenable number.

4178551945 is a deficient number, since it is larger than the sum of its proper divisors (835710395).

4178551945 is an equidigital number, since it uses as much as digits as its factorization.

4178551945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835710394.

The product of its digits is 1008000, while the sum is 49.

The square root of 4178551945 is about 64641.7198487169. The cubic root of 4178551945 is about 1610.6775365469.

The spelling of 4178551945 in words is "four billion, one hundred seventy-eight million, five hundred fifty-one thousand, nine hundred forty-five".