1878636460 has 24 divisors (see below), whose sum is σ = 4036885776. Its totient is φ = 733978560.

The previous prime is 1878636433. The next prime is 1878636469. The reversal of 1878636460 is 646368781.

It is not an unprimeable number, because it can be changed into a prime (1878636469) 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, 1091371 + ... + 1093090.

It is an arithmetic number, because the mean of its divisors is an integer number (168203574).

Almost surely, 2^1878636460 is an apocalyptic number.

1878636460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1878636460 is an abundant number, since it is smaller than the sum of its proper divisors (2158249316).

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

1878636460 is a wasteful number, since it uses less digits than its factorization.

1878636460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2184513 (or 2184511 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 49.

The square root of 1878636460 is about 43343.2400727034. The cubic root of 1878636460 is about 1233.9027029402.

The spelling of 1878636460 in words is "one billion, eight hundred seventy-eight million, six hundred thirty-six thousand, four hundred sixty".