1878156312 has 16 divisors (see below), whose sum is σ = 4695390840. Its totient is φ = 626052096.

The previous prime is 1878156299. The next prime is 1878156317. The reversal of 1878156312 is 2136518781.

1878156312 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1878156312² = 7054942264610882688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878156317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39128233 + ... + 39128280.

Almost surely, 2^1878156312 is an apocalyptic number.

1878156312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1878156312 is an abundant number, since it is smaller than the sum of its proper divisors (2817234528).

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

1878156312 is a wasteful number, since it uses less digits than its factorization.

1878156312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78256522 (or 78256518 counting only the distinct ones).

The product of its digits is 80640, while the sum is 42.

The square root of 1878156312 is about 43337.7008158024. The cubic root of 1878156312 is about 1233.7975723648.

The spelling of 1878156312 in words is "one billion, eight hundred seventy-eight million, one hundred fifty-six thousand, three hundred twelve".