1138364477 has 2 divisors, whose sum is σ = 1138364478. Its totient is φ = 1138364476.

The previous prime is 1138364471. The next prime is 1138364503. The reversal of 1138364477 is 7744638311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 730566841 + 407797636 = 27029^2 + 20194^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138364477 - 2¹⁴ = 1138348093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138364471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569182238 + 569182239.

It is an arithmetic number, because the mean of its divisors is an integer number (569182239).

Almost surely, 2^1138364477 is an apocalyptic number.

It is an amenable number.

1138364477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138364477 is an equidigital number, since it uses as much as digits as its factorization.

1138364477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 44.

The square root of 1138364477 is about 33739.6573337667. The cubic root of 1138364477 is about 1044.1441148680.

The spelling of 1138364477 in words is "one billion, one hundred thirty-eight million, three hundred sixty-four thousand, four hundred seventy-seven".