1013851 has 2 divisors, whose sum is σ = 1013852. Its totient is φ = 1013850.

The previous prime is 1013843. The next prime is 1013879. The reversal of 1013851 is 1583101.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1013851 - 2³ = 1013843 is a prime.

1013851 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1013891) 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 as a sum of consecutive naturals, namely, 506925 + 506926.

It is an arithmetic number, because the mean of its divisors is an integer number (506926).

2^1013851 is an apocalyptic number.

1013851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1013851 is an equidigital number, since it uses as much as digits as its factorization.

1013851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1013851 is about 1006.9016833832. The cubic root of 1013851 is about 100.4595845843.

Adding to 1013851 its reverse (1583101), we get a palindrome (2596952).

It can be divided in two parts, 10 and 13851, that added together give a triangular number (13861 = T₁₆₆).

The spelling of 1013851 in words is "one million, thirteen thousand, eight hundred fifty-one".