1878013512 has 40 divisors (see below), whose sum is σ = 5260178550. Its totient is φ = 626004288.

The previous prime is 1878013471. The next prime is 1878013513. The reversal of 1878013512 is 2153108781.

It can be written as a sum of positive squares in only one way, i.e., 1839895236 + 38118276 = 42894^2 + 6174^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1878013513) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1448437 + ... + 1449732.

Almost surely, 2^1878013512 is an apocalyptic number.

1878013512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1878013512 is an abundant number, since it is smaller than the sum of its proper divisors (3382165038).

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

1878013512 is a wasteful number, since it uses less digits than its factorization.

1878013512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2898187 (or 2898174 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 36.

The square root of 1878013512 is about 43336.0532582283. The cubic root of 1878013512 is about 1233.7663022023.

The spelling of 1878013512 in words is "one billion, eight hundred seventy-eight million, thirteen thousand, five hundred twelve".