1838374663 has 4 divisors (see below), whose sum is σ = 1851600520. Its totient is φ = 1825148808.

The previous prime is 1838374661. The next prime is 1838374721. The reversal of 1838374663 is 3664738381.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3664738381 = 29 ⋅126370289.

It is a cyclic number.

It is not a de Polignac number, because 1838374663 - 2¹ = 1838374661 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 (1838374661) 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, 6612720 + ... + 6612997.

It is an arithmetic number, because the mean of its divisors is an integer number (462900130).

Almost surely, 2^1838374663 is an apocalyptic number.

1838374663 is a deficient number, since it is larger than the sum of its proper divisors (13225857).

1838374663 is a wasteful number, since it uses less digits than its factorization.

1838374663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13225856.

The product of its digits is 1741824, while the sum is 49.

The square root of 1838374663 is about 42876.2715613193. The cubic root of 1838374663 is about 1225.0242200959.

The spelling of 1838374663 in words is "one billion, eight hundred thirty-eight million, three hundred seventy-four thousand, six hundred sixty-three".