1626143 has 2 divisors, whose sum is σ = 1626144. Its totient is φ = 1626142.

The previous prime is 1626137. The next prime is 1626173. The reversal of 1626143 is 3416261.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1626143 - 2⁴ = 1626127 is a prime.

It is a Chen prime.

It is equal to p₁₂₂₉₇₂ and since 1626143 and 122972 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1626133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 813071 + 813072.

It is an arithmetic number, because the mean of its divisors is an integer number (813072).

2^1626143 is an apocalyptic number.

1626143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1626143 is an equidigital number, since it uses as much as digits as its factorization.

1626143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 23.

The square root of 1626143 is about 1275.2031210752. The cubic root of 1626143 is about 117.5942928031.

The spelling of 1626143 in words is "one million, six hundred twenty-six thousand, one hundred forty-three".