2138266426 has 8 divisors (see below), whose sum is σ = 3396070260. Its totient is φ = 1006243008.

The previous prime is 2138266421. The next prime is 2138266439. The reversal of 2138266426 is 6246628312.

It can be written as a sum of positive squares in 2 ways, for example, as 2125671025 + 12595401 = 46105^2 + 3549^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2138266421) 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, 31445061 + ... + 31445128.

Almost surely, 2^2138266426 is an apocalyptic number.

2138266426 is a deficient number, since it is larger than the sum of its proper divisors (1257803834).

2138266426 is a wasteful number, since it uses less digits than its factorization.

2138266426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62890208.

The product of its digits is 165888, while the sum is 40.

The square root of 2138266426 is about 46241.3929937237. The cubic root of 2138266426 is about 1288.3106757510.

The spelling of 2138266426 in words is "two billion, one hundred thirty-eight million, two hundred sixty-six thousand, four hundred twenty-six".