4191878254 has 16 divisors (see below), whose sum is σ = 6514114320. Its totient is φ = 2020717440.

The previous prime is 4191878237. The next prime is 4191878267. The reversal of 4191878254 is 4528781914.

It is a junction number, because it is equal to n+sod(n) for n = 4191878198 and 4191878207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12219 + ... + 92374.

It is an arithmetic number, because the mean of its divisors is an integer number (407132145).

Almost surely, 2^4191878254 is an apocalyptic number.

4191878254 is a deficient number, since it is larger than the sum of its proper divisors (2322236066).

4191878254 is a wasteful number, since it uses less digits than its factorization.

4191878254 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105315.

The product of its digits is 645120, while the sum is 49.

The square root of 4191878254 is about 64744.7160315033. The cubic root of 4191878254 is about 1612.3879862418.

The spelling of 4191878254 in words is "four billion, one hundred ninety-one million, eight hundred seventy-eight thousand, two hundred fifty-four".