1383640547 has 8 divisors (see below), whose sum is σ = 1447437600. Its totient is φ = 1320915904.

The previous prime is 1383640507. The next prime is 1383640597. The reversal of 1383640547 is 7450463831.

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

It is a cyclic number.

It is not a de Polignac number, because 1383640547 - 2¹² = 1383636451 is a prime.

It is a super-2 number, since 2×1383640547² = 3828922326604918418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1383640507) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 265463 + ... + 270624.

It is an arithmetic number, because the mean of its divisors is an integer number (180929700).

Almost surely, 2^1383640547 is an apocalyptic number.

1383640547 is a deficient number, since it is larger than the sum of its proper divisors (63797053).

1383640547 is an equidigital number, since it uses as much as digits as its factorization.

1383640547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536205.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 1383640547 is about 37197.3190835039. The cubic root of 1383640547 is about 1114.3144443463.

The spelling of 1383640547 in words is "one billion, three hundred eighty-three million, six hundred forty thousand, five hundred forty-seven".