1878788734858 has 48 divisors (see below), whose sum is σ = 3334260900960. Its totient is φ = 791452365984.

The previous prime is 1878788734843. The next prime is 1878788734883. The reversal of 1878788734858 is 8584378878781.

It is a super-2 number, since 2×1878788734858² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68925160 + ... + 68952412.

It is an arithmetic number, because the mean of its divisors is an integer number (69463768770).

Almost surely, 2^{1878788734858} is an apocalyptic number.

1878788734858 is a deficient number, since it is larger than the sum of its proper divisors (1455472166102).

1878788734858 is a wasteful number, since it uses less digits than its factorization.

1878788734858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39251 (or 39244 counting only the distinct ones).

The product of its digits is 5394923520, while the sum is 82.

The spelling of 1878788734858 in words is "one trillion, eight hundred seventy-eight billion, seven hundred eighty-eight million, seven hundred thirty-four thousand, eight hundred fifty-eight".