1313878 has 4 divisors (see below), whose sum is σ = 1970820. Its totient is φ = 656938.

The previous prime is 1313863. The next prime is 1313881. The reversal of 1313878 is 8783131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8783131 = 7 ⋅1254733.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328468 + ... + 328471.

It is an arithmetic number, because the mean of its divisors is an integer number (492705).

2^1313878 is an apocalyptic number.

1313878 is a deficient number, since it is larger than the sum of its proper divisors (656942).

1313878 is an equidigital number, since it uses as much as digits as its factorization.

1313878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656941.

The product of its digits is 4032, while the sum is 31.

The square root of 1313878 is about 1146.2451744718. The cubic root of 1313878 is about 109.5262824118.

The spelling of 1313878 in words is "one million, three hundred thirteen thousand, eight hundred seventy-eight".