1143400867 has 16 divisors (see below), whose sum is σ = 1382464000. Its totient is φ = 923788800.

The previous prime is 1143400861. The next prime is 1143400873. The reversal of 1143400867 is 7680043411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1143400861) and next prime (1143400873).

It is a cyclic number.

It is not a de Polignac number, because 1143400867 - 2³ = 1143400859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143400861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4867 + ... + 48067.

It is an arithmetic number, because the mean of its divisors is an integer number (86404000).

Almost surely, 2^1143400867 is an apocalyptic number.

1143400867 is a deficient number, since it is larger than the sum of its proper divisors (239063133).

1143400867 is a wasteful number, since it uses less digits than its factorization.

1143400867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43426.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 1143400867 is about 33814.2110214034. The cubic root of 1143400867 is about 1045.6816952671.

The spelling of 1143400867 in words is "one billion, one hundred forty-three million, four hundred thousand, eight hundred sixty-seven".