1381442361 has 8 divisors (see below), whose sum is σ = 1983609600. Its totient is φ = 850118352.

The previous prime is 1381442357. The next prime is 1381442371. The reversal of 1381442361 is 1632441831.

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

It is not a de Polignac number, because 1381442361 - 2² = 1381442357 is a prime.

It is a super-3 number, since 3×1381442361³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1381442311) 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, 17710761 + ... + 17710838.

It is an arithmetic number, because the mean of its divisors is an integer number (247951200).

Almost surely, 2^1381442361 is an apocalyptic number.

It is an amenable number.

1381442361 is a deficient number, since it is larger than the sum of its proper divisors (602167239).

1381442361 is a wasteful number, since it uses less digits than its factorization.

1381442361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35421615.

The product of its digits is 13824, while the sum is 33.

The square root of 1381442361 is about 37167.7596984268. The cubic root of 1381442361 is about 1113.7240287892.

The spelling of 1381442361 in words is "one billion, three hundred eighty-one million, four hundred forty-two thousand, three hundred sixty-one".