1143989690 has 8 divisors (see below), whose sum is σ = 2059181460. Its totient is φ = 457595872.

The previous prime is 1143989689. The next prime is 1143989723. The reversal of 1143989690 is 969893411.

It can be written as a sum of positive squares in 2 ways, for example, as 1133870929 + 10118761 = 33673^2 + 3181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1143989690² = 2617424821652592200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57199475 + ... + 57199494.

Almost surely, 2^1143989690 is an apocalyptic number.

1143989690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1143989690 is a deficient number, since it is larger than the sum of its proper divisors (915191770).

1143989690 is a wasteful number, since it uses less digits than its factorization.

1143989690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114398976.

The product of its (nonzero) digits is 419904, while the sum is 50.

The square root of 1143989690 is about 33822.9166394621. The cubic root of 1143989690 is about 1045.8611644825.

The spelling of 1143989690 in words is "one billion, one hundred forty-three million, nine hundred eighty-nine thousand, six hundred ninety".