1838385715 has 16 divisors (see below), whose sum is σ = 2299355136. Its totient is φ = 1409436000.

The previous prime is 1838385709. The next prime is 1838385727. The reversal of 1838385715 is 5175838381.

It is not a de Polignac number, because 1838385715 - 2⁹ = 1838385203 is a prime.

It is a super-2 number, since 2×1838385715² = 6759324074232122450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41611 + ... + 73540.

It is an arithmetic number, because the mean of its divisors is an integer number (143709696).

Almost surely, 2^1838385715 is an apocalyptic number.

1838385715 is a deficient number, since it is larger than the sum of its proper divisors (460969421).

1838385715 is a wasteful number, since it uses less digits than its factorization.

1838385715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115290.

The product of its digits is 806400, while the sum is 49.

The square root of 1838385715 is about 42876.4004436007. The cubic root of 1838385715 is about 1225.0266749710.

The spelling of 1838385715 in words is "one billion, eight hundred thirty-eight million, three hundred eighty-five thousand, seven hundred fifteen".