1143621016 has 8 divisors (see below), whose sum is σ = 2144289420. Its totient is φ = 571810504.

The previous prime is 1143620941. The next prime is 1143621023. The reversal of 1143621016 is 6101263411.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71476306 + ... + 71476321.

Almost surely, 2^1143621016 is an apocalyptic number.

It is an amenable number.

1143621016 is a deficient number, since it is larger than the sum of its proper divisors (1000668404).

1143621016 is a wasteful number, since it uses less digits than its factorization.

1143621016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142952633 (or 142952629 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1143621016 is about 33817.4661380772. The cubic root of 1143621016 is about 1045.7488023839.

Adding to 1143621016 its reverse (6101263411), we get a palindrome (7244884427).

The spelling of 1143621016 in words is "one billion, one hundred forty-three million, six hundred twenty-one thousand, sixteen".