3658785963 has 24 divisors (see below), whose sum is σ = 5594252544. Its totient is φ = 2083646880.

The previous prime is 3658785961. The next prime is 3658786007. The reversal of 3658785963 is 3695878563.

It is not a de Polignac number, because 3658785963 - 2¹ = 3658785961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3658785897 and 3658785906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3658785961) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3721570 + ... + 3722552.

It is an arithmetic number, because the mean of its divisors is an integer number (233093856).

Almost surely, 2^3658785963 is an apocalyptic number.

3658785963 is a deficient number, since it is larger than the sum of its proper divisors (1935466581).

3658785963 is an frugal number, since it uses more digits than its factorization.

3658785963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835 (or 1414 counting only the distinct ones).

The product of its digits is 32659200, while the sum is 60.

The square root of 3658785963 is about 60487.8993105233. The cubic root of 3658785963 is about 1540.9161304167.

The spelling of 3658785963 in words is "three billion, six hundred fifty-eight million, seven hundred eighty-five thousand, nine hundred sixty-three".