1138881607 has 2 divisors, whose sum is σ = 1138881608. Its totient is φ = 1138881606.

The previous prime is 1138881563. The next prime is 1138881673. The reversal of 1138881607 is 7061888311.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138881607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138888607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569440803 + 569440804.

It is an arithmetic number, because the mean of its divisors is an integer number (569440804).

Almost surely, 2^1138881607 is an apocalyptic number.

1138881607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138881607 is an equidigital number, since it uses as much as digits as its factorization.

1138881607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 1138881607 is about 33747.3199972976. The cubic root of 1138881607 is about 1044.3022002951.

The spelling of 1138881607 in words is "one billion, one hundred thirty-eight million, eight hundred eighty-one thousand, six hundred seven".