3648778463 has 16 divisors (see below), whose sum is σ = 4122610560. Its totient is φ = 3198904800.

The previous prime is 3648778409. The next prime is 3648778513.

3648778463 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 3648778463 - 2²² = 3644584159 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3648778399 and 3648778408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3648778363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 283028 + ... + 295638.

It is an arithmetic number, because the mean of its divisors is an integer number (257663160).

Almost surely, 2^3648778463 is an apocalyptic number.

3648778463 is a deficient number, since it is larger than the sum of its proper divisors (473832097).

3648778463 is a wasteful number, since it uses less digits than its factorization.

3648778463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13558.

The product of its digits is 16257024, while the sum is 56.

The square root of 3648778463 is about 60405.1195098561. The cubic root of 3648778463 is about 1539.5099445669.

The spelling of 3648778463 in words is "three billion, six hundred forty-eight million, seven hundred seventy-eight thousand, four hundred sixty-three".