1913838 has 16 divisors (see below), whose sum is σ = 3843840. Its totient is φ = 635256.

The previous prime is 1913833. The next prime is 1913861. The reversal of 1913838 is 8383191.

It is a junction number, because it is equal to n+sod(n) for n = 1913799 and 1913808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913831) 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, 1323 + ... + 2361.

It is an arithmetic number, because the mean of its divisors is an integer number (240240).

2^1913838 is an apocalyptic number.

1913838 is an abundant number, since it is smaller than the sum of its proper divisors (1930002).

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

1913838 is a wasteful number, since it uses less digits than its factorization.

1913838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351.

The product of its digits is 5184, while the sum is 33.

The square root of 1913838 is about 1383.4153389348. The cubic root of 1913838 is about 124.1561940829.

The spelling of 1913838 in words is "one million, nine hundred thirteen thousand, eight hundred thirty-eight".