1913534 has 16 divisors (see below), whose sum is σ = 3314688. Its totient is φ = 811512.

The previous prime is 1913533. The next prime is 1913539. The reversal of 1913534 is 4353191.

It is a super-2 number, since 2×1913534² = 7323224738312, which contains 22 as substring.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1913533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779 + ... + 2105.

It is an arithmetic number, because the mean of its divisors is an integer number (207168).

2^1913534 is an apocalyptic number.

1913534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1913534 is a deficient number, since it is larger than the sum of its proper divisors (1401154).

1913534 is a wasteful number, since it uses less digits than its factorization.

1913534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1439.

The product of its digits is 1620, while the sum is 26.

The square root of 1913534 is about 1383.3054615666. The cubic root of 1913534 is about 124.1496199491.

The spelling of 1913534 in words is "one million, nine hundred thirteen thousand, five hundred thirty-four".