1913193 has 16 divisors (see below), whose sum is σ = 2884800. Its totient is φ = 1252800.

The previous prime is 1913161. The next prime is 1913201. The reversal of 1913193 is 3913191.

It is not a de Polignac number, because 1913193 - 2⁵ = 1913161 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1913123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 993 + ... + 2193.

It is an arithmetic number, because the mean of its divisors is an integer number (180300).

2^1913193 is an apocalyptic number.

It is an amenable number.

1913193 is a deficient number, since it is larger than the sum of its proper divisors (971607).

1913193 is a wasteful number, since it uses less digits than its factorization.

1913193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269 (or 1263 counting only the distinct ones).

The product of its digits is 729, while the sum is 27.

The square root of 1913193 is about 1383.1822005795. The cubic root of 1913193 is about 124.1422448453.

The spelling of 1913193 in words is "one million, nine hundred thirteen thousand, one hundred ninety-three".