1219426433 has 4 divisors (see below), whose sum is σ = 1219529028. Its totient is φ = 1219323840.

The previous prime is 1219426399. The next prime is 1219426499. The reversal of 1219426433 is 3346249121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 580954609 + 638471824 = 24103^2 + 25268^2 .

It is a cyclic number.

It is not a de Polignac number, because 1219426433 - 2¹⁶ = 1219360897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1219426393 and 1219426402.

It is not an unprimeable number, because it can be changed into a prime (1219426933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30716 + ... + 58157.

It is an arithmetic number, because the mean of its divisors is an integer number (304882257).

Almost surely, 2^1219426433 is an apocalyptic number.

It is an amenable number.

1219426433 is a deficient number, since it is larger than the sum of its proper divisors (102595).

1219426433 is an equidigital number, since it uses as much as digits as its factorization.

1219426433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102594.

The product of its digits is 31104, while the sum is 35.

The square root of 1219426433 is about 34920.2868401736. The cubic root of 1219426433 is about 1068.3622521539.

The spelling of 1219426433 in words is "one billion, two hundred nineteen million, four hundred twenty-six thousand, four hundred thirty-three".