103815789819 has 32 divisors (see below), whose sum is σ = 158974233600. Its totient is φ = 59031936000.

The previous prime is 103815789817. The next prime is 103815789853. The reversal of 103815789819 is 918987518301.

It is a happy number.

It is not a de Polignac number, because 103815789819 - 2¹ = 103815789817 is a prime.

It is a super-2 number, since 2×103815789819² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (103815789817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3911907 + ... + 3938355.

It is an arithmetic number, because the mean of its divisors is an integer number (4967944800).

Almost surely, 2^103815789819 is an apocalyptic number.

103815789819 is a deficient number, since it is larger than the sum of its proper divisors (55158443781).

103815789819 is a wasteful number, since it uses less digits than its factorization.

103815789819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27371.

The product of its (nonzero) digits is 4354560, while the sum is 60.

The spelling of 103815789819 in words is "one hundred three billion, eight hundred fifteen million, seven hundred eighty-nine thousand, eight hundred nineteen".