1726426473138 has 12 divisors (see below), whose sum is σ = 3740590691838. Its totient is φ = 575475491040.

The previous prime is 1726426473137. The next prime is 1726426473139. The reversal of 1726426473138 is 8313746246271.

1726426473138 is a `hidden beast` number, since 1 + 7 + 2 + 64 + 264 + 7 + 313 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (1726426473137) and next prime (1726426473139).

It can be written as a sum of positive squares in only one way, i.e., 1676887732809 + 49538740329 = 1294947^2 + 222573^2 .

It is not an unprimeable number, because it can be changed into a prime (1726426473131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47956290903 + ... + 47956290938.

Almost surely, 2^{1726426473138} is an apocalyptic number.

1726426473138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1726426473138 is an abundant number, since it is smaller than the sum of its proper divisors (2014164218700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1726426473138 is a wasteful number, since it uses less digits than its factorization.

1726426473138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95912581849 (or 95912581846 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The spelling of 1726426473138 in words is "one trillion, seven hundred twenty-six billion, four hundred twenty-six million, four hundred seventy-three thousand, one hundred thirty-eight".