1878130 has 16 divisors (see below), whose sum is σ = 3397464. Its totient is φ = 747520.

The previous prime is 1878119. The next prime is 1878139. The reversal of 1878130 is 318781.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1874161 + 3969 = 1369^2 + 63^2 .

It is not an unprimeable number, because it can be changed into a prime (1878139) 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, 2610 + ... + 3250.

2^1878130 is an apocalyptic number.

1878130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1878130 is a deficient number, since it is larger than the sum of its proper divisors (1519334).

1878130 is a wasteful number, since it uses less digits than its factorization.

1878130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 941.

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

The square root of 1878130 is about 1370.4488315877. The cubic root of 1878130 is about 123.3791810716.

Multiplying 1878130 by its sum of digits (28), we get a triangular number (52587640 = T₁₀₂₅₅).

The spelling of 1878130 in words is "one million, eight hundred seventy-eight thousand, one hundred thirty".