1878706512 has 60 divisors (see below), whose sum is σ = 5261592180. Its totient is φ = 625780224.

The previous prime is 1878706483. The next prime is 1878706519. The reversal of 1878706512 is 2156078781.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 331385616 + 1547320896 = 18204^2 + 39336^2 .

It is a super-2 number, since 2×1878706512² = 7059076316462412288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878706519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236428 + ... + 244244.

It is an arithmetic number, because the mean of its divisors is an integer number (87693203).

Almost surely, 2^1878706512 is an apocalyptic number.

1878706512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1878706512 is an abundant number, since it is smaller than the sum of its proper divisors (3382885668).

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

1878706512 is a wasteful number, since it uses less digits than its factorization.

1878706512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9500 (or 9491 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 45.

The square root of 1878706512 is about 43344.0481727307. The cubic root of 1878706512 is about 1233.9180396449.

The spelling of 1878706512 in words is "one billion, eight hundred seventy-eight million, seven hundred six thousand, five hundred twelve".