1319785854 has 16 divisors (see below), whose sum is σ = 2794840848. Its totient is φ = 414050432.

The previous prime is 1319785849. The next prime is 1319785867. The reversal of 1319785854 is 4585879131.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 1319785797 and 1319785806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6469437 + ... + 6469640.

It is an arithmetic number, because the mean of its divisors is an integer number (174677553).

Almost surely, 2^1319785854 is an apocalyptic number.

1319785854 is an abundant number, since it is smaller than the sum of its proper divisors (1475054994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1319785854 is a wasteful number, since it uses less digits than its factorization.

1319785854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12939099.

The product of its digits is 1209600, while the sum is 51.

The square root of 1319785854 is about 36328.8570423018. The cubic root of 1319785854 is about 1096.9019866024.

The spelling of 1319785854 in words is "one billion, three hundred nineteen million, seven hundred eighty-five thousand, eight hundred fifty-four".