1426881815 has 4 divisors (see below), whose sum is σ = 1712258184. Its totient is φ = 1141505448.

The previous prime is 1426881811. The next prime is 1426881823. The reversal of 1426881815 is 5181886241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5181886241 = 7 ⋅740269463.

It is a cyclic number.

It is not a de Polignac number, because 1426881815 - 2² = 1426881811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1426881811) 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, 142688177 + ... + 142688186.

It is an arithmetic number, because the mean of its divisors is an integer number (428064546).

Almost surely, 2^1426881815 is an apocalyptic number.

1426881815 is a deficient number, since it is larger than the sum of its proper divisors (285376369).

1426881815 is an equidigital number, since it uses as much as digits as its factorization.

1426881815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285376368.

The product of its digits is 122880, while the sum is 44.

The square root of 1426881815 is about 37774.0892014619. The cubic root of 1426881815 is about 1125.8036897476.

The spelling of 1426881815 in words is "one billion, four hundred twenty-six million, eight hundred eighty-one thousand, eight hundred fifteen".