1378180 has 12 divisors (see below), whose sum is σ = 2894220. Its totient is φ = 551264.

The previous prime is 1378163. The next prime is 1378187. The reversal of 1378180 is 818731.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 760384 + 617796 = 872^2 + 786^2 .

It is a super-2 number, since 2×1378180² = 3798760224800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1378187) 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, 34435 + ... + 34474.

It is an arithmetic number, because the mean of its divisors is an integer number (241185).

2^1378180 is an apocalyptic number.

1378180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1378180 is an abundant number, since it is smaller than the sum of its proper divisors (1516040).

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

1378180 is a wasteful number, since it uses less digits than its factorization.

1378180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68918 (or 68916 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 1378180 is about 1173.9591134277. The cubic root of 1378180 is about 111.2846628511.

It can be divided in two parts, 13781 and 80, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 1378180 in words is "one million, three hundred seventy-eight thousand, one hundred eighty".