38649778603 has 2 divisors, whose sum is σ = 38649778604. Its totient is φ = 38649778602.

The previous prime is 38649778577. The next prime is 38649778627. The reversal of 38649778603 is 30687794683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38649778603 - 2⁵ = 38649778571 is a prime.

It is not a weakly prime, because it can be changed into another prime (38649778633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19324889301 + 19324889302.

It is an arithmetic number, because the mean of its divisors is an integer number (19324889302).

Almost surely, 2^38649778603 is an apocalyptic number.

38649778603 is a deficient number, since it is larger than the sum of its proper divisors (1).

38649778603 is an equidigital number, since it uses as much as digits as its factorization.

38649778603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36578304, while the sum is 61.

The spelling of 38649778603 in words is "thirty-eight billion, six hundred forty-nine million, seven hundred seventy-eight thousand, six hundred three".