1913938 has 8 divisors (see below), whose sum is σ = 3091788. Its totient is φ = 883344.

The previous prime is 1913917. The next prime is 1913939. The reversal of 1913938 is 8393191.

It can be written as a sum of positive squares in 2 ways, for example, as 1857769 + 56169 = 1363^2 + 237^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1913939) 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, 36781 + ... + 36832.

2^1913938 is an apocalyptic number.

1913938 is a deficient number, since it is larger than the sum of its proper divisors (1177850).

1913938 is a wasteful number, since it uses less digits than its factorization.

1913938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73628.

The product of its digits is 5832, while the sum is 34.

The square root of 1913938 is about 1383.4514808984. The cubic root of 1913938 is about 124.1583564748.

The spelling of 1913938 in words is "one million, nine hundred thirteen thousand, nine hundred thirty-eight".