1143486381 has 8 divisors (see below), whose sum is σ = 1545534400. Its totient is φ = 751881312.

The previous prime is 1143486373. The next prime is 1143486389. The reversal of 1143486381 is 1836843411.

It is an interprime number because it is at equal distance from previous prime (1143486373) and next prime (1143486389).

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

It is not a de Polignac number, because 1143486381 - 2³ = 1143486373 is a prime.

It is a super-2 number, since 2×1143486381² = 2615122207064954322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143486389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2610481 + ... + 2610918.

It is an arithmetic number, because the mean of its divisors is an integer number (193191800).

Almost surely, 2^1143486381 is an apocalyptic number.

It is an amenable number.

1143486381 is a deficient number, since it is larger than the sum of its proper divisors (402048019).

1143486381 is an equidigital number, since it uses as much as digits as its factorization.

1143486381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5221475.

The product of its digits is 55296, while the sum is 39.

The square root of 1143486381 is about 33815.4754661235. The cubic root of 1143486381 is about 1045.7077631721.

The spelling of 1143486381 in words is "one billion, one hundred forty-three million, four hundred eighty-six thousand, three hundred eighty-one".