1143739380 has 72 divisors (see below), whose sum is σ = 3725332128. Its totient is φ = 261425472.

The previous prime is 1143739361. The next prime is 1143739393. The reversal of 1143739380 is 839373411.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 191574 + ... + 197453.

It is an arithmetic number, because the mean of its divisors is an integer number (51740724).

Almost surely, 2^1143739380 is an apocalyptic number.

1143739380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143739380 is an abundant number, since it is smaller than the sum of its proper divisors (2581592748).

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

1143739380 is a wasteful number, since it uses less digits than its factorization.

1143739380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389053 (or 389044 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1143739380 is about 33819.2161352093. The cubic root of 1143739380 is about 1045.7848792367.

It can be divided in two parts, 114373 and 9380, that added together give a triangular number (123753 = T₄₉₇).

The spelling of 1143739380 in words is "one billion, one hundred forty-three million, seven hundred thirty-nine thousand, three hundred eighty".