1881878044478 has 16 divisors (see below), whose sum is σ = 2898531941760. Its totient is φ = 916010403096.

The previous prime is 1881878044441. The next prime is 1881878044559. The reversal of 1881878044478 is 8744408781881.

It is a super-4 number, since 4×1881878044478⁴ (a number of 50 digits) contains 4444 as substring.

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, 77405900 + ... + 77430207.

It is an arithmetic number, because the mean of its divisors is an integer number (181158246360).

Almost surely, 2^{1881878044478} is an apocalyptic number.

1881878044478 is a deficient number, since it is larger than the sum of its proper divisors (1016653897282).

1881878044478 is a wasteful number, since it uses less digits than its factorization.

1881878044478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154836271.

The product of its (nonzero) digits is 102760448, while the sum is 68.

The spelling of 1881878044478 in words is "one trillion, eight hundred eighty-one billion, eight hundred seventy-eight million, forty-four thousand, four hundred seventy-eight".