1369219426 has 4 divisors (see below), whose sum is σ = 2053829142. Its totient is φ = 684609712.

The previous prime is 1369219391. The next prime is 1369219429. The reversal of 1369219426 is 6249129631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6249129631 = 883 ⋅7077157.

It can be written as a sum of positive squares in only one way, i.e., 1149142201 + 220077225 = 33899^2 + 14835^2 .

It is not an unprimeable number, because it can be changed into a prime (1369219429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 342304855 + ... + 342304858.

Almost surely, 2^1369219426 is an apocalyptic number.

1369219426 is a deficient number, since it is larger than the sum of its proper divisors (684609716).

1369219426 is an equidigital number, since it uses as much as digits as its factorization.

1369219426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684609715.

The product of its digits is 139968, while the sum is 43.

The square root of 1369219426 is about 37002.9650974081. The cubic root of 1369219426 is about 1110.4295677951.

The spelling of 1369219426 in words is "one billion, three hundred sixty-nine million, two hundred nineteen thousand, four hundred twenty-six".