1383256426 has 4 divisors (see below), whose sum is σ = 2074884642. Its totient is φ = 691628212.

The previous prime is 1383256421. The next prime is 1383256429. The reversal of 1383256426 is 6246523831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6246523831 = 593 ⋅10533767.

It can be written as a sum of positive squares in only one way, i.e., 891082201 + 492174225 = 29851^2 + 22185^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1383256421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345814105 + ... + 345814108.

Almost surely, 2^1383256426 is an apocalyptic number.

1383256426 is a deficient number, since it is larger than the sum of its proper divisors (691628216).

1383256426 is an equidigital number, since it uses as much as digits as its factorization.

1383256426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691628215.

The product of its digits is 207360, while the sum is 40.

The square root of 1383256426 is about 37192.1554363282. The cubic root of 1383256426 is about 1114.2113175635.

The spelling of 1383256426 in words is "one billion, three hundred eighty-three million, two hundred fifty-six thousand, four hundred twenty-six".