1138266426 has 32 divisors (see below), whose sum is σ = 2493421056. Its totient is φ = 343550000.

The previous prime is 1138266407. The next prime is 1138266473. The reversal of 1138266426 is 6246628311.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17790 + ... + 50921.

It is an arithmetic number, because the mean of its divisors is an integer number (77919408).

Almost surely, 2^1138266426 is an apocalyptic number.

1138266426 is an abundant number, since it is smaller than the sum of its proper divisors (1355154630).

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

1138266426 is a wasteful number, since it uses less digits than its factorization.

1138266426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68978.

The product of its digits is 82944, while the sum is 39.

The square root of 1138266426 is about 33738.2042497819. The cubic root of 1138266426 is about 1044.1141355083.

The spelling of 1138266426 in words is "one billion, one hundred thirty-eight million, two hundred sixty-six thousand, four hundred twenty-six".