1913816 has 16 divisors (see below), whose sum is σ = 3704640. Its totient is φ = 925920.

The previous prime is 1913803. The next prime is 1913819. The reversal of 1913816 is 6183191.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913819) 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, 3611 + ... + 4106.

It is an arithmetic number, because the mean of its divisors is an integer number (231540).

2^1913816 is an apocalyptic number.

It is an amenable number.

1913816 is a deficient number, since it is larger than the sum of its proper divisors (1790824).

1913816 is a wasteful number, since it uses less digits than its factorization.

1913816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7754 (or 7750 counting only the distinct ones).

The product of its digits is 1296, while the sum is 29.

The square root of 1913816 is about 1383.4073875761. The cubic root of 1913816 is about 124.1557183466.

The spelling of 1913816 in words is "one million, nine hundred thirteen thousand, eight hundred sixteen".