1143400873 has 2 divisors, whose sum is σ = 1143400874. Its totient is φ = 1143400872.

The previous prime is 1143400861. The next prime is 1143400879. The reversal of 1143400873 is 3780043411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 975750169 + 167650704 = 31237^2 + 12948^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143400873 - 2⁹ = 1143400361 is a prime.

It is a super-3 number, since 3×1143400873³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1143400879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571700436 + 571700437.

It is an arithmetic number, because the mean of its divisors is an integer number (571700437).

Almost surely, 2^1143400873 is an apocalyptic number.

It is an amenable number.

1143400873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1143400873 is an equidigital number, since it uses as much as digits as its factorization.

1143400873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 1143400873 is about 33814.2111101235. The cubic root of 1143400873 is about 1045.6816970962.

The spelling of 1143400873 in words is "one billion, one hundred forty-three million, four hundred thousand, eight hundred seventy-three".