1143642654 has 72 divisors (see below), whose sum is σ = 3144513528. Its totient is φ = 297047520.

The previous prime is 1143642629. The next prime is 1143642659. The reversal of 1143642654 is 4562463411.

1143642654 is a `hidden beast` number, since 1 + 1 + 4 + 3 + 642 + 6 + 5 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143642659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 49237 + ... + 68640.

It is an arithmetic number, because the mean of its divisors is an integer number (43673799).

Almost surely, 2^1143642654 is an apocalyptic number.

1143642654 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1143642654 is an abundant number, since it is smaller than the sum of its proper divisors (2000870874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143642654 is a wasteful number, since it uses less digits than its factorization.

1143642654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117910 (or 117900 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 1143642654 is about 33817.7860600010. The cubic root of 1143642654 is about 1045.7553977419.

The spelling of 1143642654 in words is "one billion, one hundred forty-three million, six hundred forty-two thousand, six hundred fifty-four".