1143090657 has 16 divisors (see below), whose sum is σ = 1694143360. Its totient is φ = 761756400.

The previous prime is 1143090653. The next prime is 1143090679. The reversal of 1143090657 is 7560903411.

It is not a de Polignac number, because 1143090657 - 2² = 1143090653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143090653) 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, 75732 + ... + 89562.

It is an arithmetic number, because the mean of its divisors is an integer number (105883960).

Almost surely, 2^1143090657 is an apocalyptic number.

It is an amenable number.

1143090657 is a deficient number, since it is larger than the sum of its proper divisors (551052703).

1143090657 is a wasteful number, since it uses less digits than its factorization.

1143090657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16901 (or 16895 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 1143090657 is about 33809.6237334875. The cubic root of 1143090657 is about 1045.5871206031.

The spelling of 1143090657 in words is "one billion, one hundred forty-three million, ninety thousand, six hundred fifty-seven".