1426911905 has 4 divisors (see below), whose sum is σ = 1712294292. Its totient is φ = 1141529520.

The previous prime is 1426911887. The next prime is 1426911917. The reversal of 1426911905 is 5091196241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5091196241 = 6637 ⋅767093.

It can be written as a sum of positive squares in 2 ways, for example, as 644702881 + 782209024 = 25391^2 + 27968^2 .

It is not a de Polignac number, because 1426911905 - 2⁶ = 1426911841 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142691186 + ... + 142691195.

It is an arithmetic number, because the mean of its divisors is an integer number (428073573).

Almost surely, 2^1426911905 is an apocalyptic number.

It is an amenable number.

1426911905 is a deficient number, since it is larger than the sum of its proper divisors (285382387).

1426911905 is an equidigital number, since it uses as much as digits as its factorization.

1426911905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285382386.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 1426911905 is about 37774.4874882506. The cubic root of 1426911905 is about 1125.8116033193.

The spelling of 1426911905 in words is "one billion, four hundred twenty-six million, nine hundred eleven thousand, nine hundred five".