1838393413 has 8 divisors (see below), whose sum is σ = 1948474008. Its totient is φ = 1728528384.

The previous prime is 1838393411. The next prime is 1838393419. The reversal of 1838393413 is 3143938381.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 122611329 + 1715782084 = 11073^2 + 41422^2 .

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 1838393413 - 2¹ = 1838393411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1838393413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1838393411) 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, 36156 + ... + 70597.

It is an arithmetic number, because the mean of its divisors is an integer number (243559251).

Almost surely, 2^1838393413 is an apocalyptic number.

It is an amenable number.

1838393413 is a deficient number, since it is larger than the sum of its proper divisors (110080595).

1838393413 is a wasteful number, since it uses less digits than its factorization.

1838393413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107783.

The product of its digits is 186624, while the sum is 43.

The square root of 1838393413 is about 42876.4902131693. The cubic root of 1838393413 is about 1225.0283848483.

The spelling of 1838393413 in words is "one billion, eight hundred thirty-eight million, three hundred ninety-three thousand, four hundred thirteen".