1143851 has 2 divisors, whose sum is σ = 1143852. Its totient is φ = 1143850.

The previous prime is 1143829. The next prime is 1143887. The reversal of 1143851 is 1583411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1143851 - 2¹⁸ = 881707 is a prime.

It is a super-2 number, since 2×1143851² = 2616790220402, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1143551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571925 + 571926.

It is an arithmetic number, because the mean of its divisors is an integer number (571926).

2^1143851 is an apocalyptic number.

1143851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143851 is an equidigital number, since it uses as much as digits as its factorization.

1143851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 23.

The square root of 1143851 is about 1069.5097007508. The cubic root of 1143851 is about 104.5818898266.

Subtracting from 1143851 its sum of digits (23), we obtain a triangular number (1143828 = T₁₅₁₂).

The spelling of 1143851 in words is "one million, one hundred forty-three thousand, eight hundred fifty-one".