383621418613 has 4 divisors (see below), whose sum is σ = 393989565100. Its totient is φ = 373253272128.

The previous prime is 383621418571. The next prime is 383621418641. The reversal of 383621418613 is 316814126383.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 307139856804 + 76481561809 = 554202^2 + 276553^2 .

It is a cyclic number.

It is not a de Polignac number, because 383621418613 - 2²¹ = 383619321461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383621478613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5184073188 + ... + 5184073261.

It is an arithmetic number, because the mean of its divisors is an integer number (98497391275).

Almost surely, 2^383621418613 is an apocalyptic number.

It is an amenable number.

383621418613 is a deficient number, since it is larger than the sum of its proper divisors (10368146487).

383621418613 is a wasteful number, since it uses less digits than its factorization.

383621418613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10368146486.

The product of its digits is 497664, while the sum is 46.

The spelling of 383621418613 in words is "three hundred eighty-three billion, six hundred twenty-one million, four hundred eighteen thousand, six hundred thirteen".