1143643077 has 16 divisors (see below), whose sum is σ = 1696572160. Its totient is φ = 761400000.

The previous prime is 1143643069. The next prime is 1143643121. The reversal of 1143643077 is 7703463411.

1143643077 is a `hidden beast` number, since 1 + 1 + 4 + 3 + 643 + 0 + 7 + 7 = 666.

It is not a de Polignac number, because 1143643077 - 2³ = 1143643069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143643777) 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, 7924 + ... + 48477.

It is an arithmetic number, because the mean of its divisors is an integer number (106035760).

Almost surely, 2^1143643077 is an apocalyptic number.

It is an amenable number.

1143643077 is a deficient number, since it is larger than the sum of its proper divisors (552929083).

1143643077 is an equidigital number, since it uses as much as digits as its factorization.

1143643077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57161 (or 57155 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 1143643077 is about 33817.7923141059. The cubic root of 1143643077 is about 1045.7555266733.

The spelling of 1143643077 in words is "one billion, one hundred forty-three million, six hundred forty-three thousand, seventy-seven".