1018338778419 has 16 divisors (see below), whose sum is σ = 1395614922240. Its totient is φ = 660007392480.

The previous prime is 1018338778417. The next prime is 1018338778459. The reversal of 1018338778419 is 9148778338101.

It is not a de Polignac number, because 1018338778419 - 2¹ = 1018338778417 is a prime.

It is a super-2 number, since 2×1018338778419² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1018338778417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3589689 + ... + 3862970.

It is an arithmetic number, because the mean of its divisors is an integer number (87225932640).

Almost surely, 2^{1018338778419} is an apocalyptic number.

1018338778419 is a deficient number, since it is larger than the sum of its proper divisors (377276143821).

1018338778419 is a wasteful number, since it uses less digits than its factorization.

1018338778419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7453930.

The product of its (nonzero) digits is 8128512, while the sum is 60.

The spelling of 1018338778419 in words is "one trillion, eighteen billion, three hundred thirty-eight million, seven hundred seventy-eight thousand, four hundred nineteen".