1426431314889 has 27 divisors (see below), whose sum is σ = 2396834897223. Its totient is φ = 815089276512.

The previous prime is 1426431314887. The next prime is 1426431314939. The reversal of 1426431314889 is 9884131346241.

The square root of 1426431314889 is 1194333.

It is a perfect power (a square), and thus also a powerful number.

1426431314889 is a `hidden beast` number, since 1 + 4 + 26 + 4 + 3 + 131 + 488 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 75276153225 + 1351155161664 = 274365^2 + 1162392^2 .

It is not a de Polignac number, because 1426431314889 - 2¹ = 1426431314887 is a prime.

It is a super-2 number, since 2×1426431314889² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1426431314887) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 25052557 + ... + 25109429.

Almost surely, 2^{1426431314889} is an apocalyptic number.

1426431314889 is the 1194333-rd square number.

1426431314889 is the 597167-th centered octagonal number.

It is an amenable number.

1426431314889 is a deficient number, since it is larger than the sum of its proper divisors (970403582334).

1426431314889 is an frugal number, since it uses more digits than its factorization.

1426431314889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113766 (or 56883 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 54.

The spelling of 1426431314889 in words is "one trillion, four hundred twenty-six billion, four hundred thirty-one million, three hundred fourteen thousand, eight hundred eighty-nine".