3698578266 has 32 divisors (see below), whose sum is σ = 7976404800. Its totient is φ = 1139483520.

The previous prime is 3698578241. The next prime is 3698578267. The reversal of 3698578266 is 6628758963.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3698578267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390981 + ... + 400328.

It is an arithmetic number, because the mean of its divisors is an integer number (249262650).

Almost surely, 2^3698578266 is an apocalyptic number.

3698578266 is an abundant number, since it is smaller than the sum of its proper divisors (4277826534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3698578266 is a wasteful number, since it uses less digits than its factorization.

3698578266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791374.

The product of its digits is 26127360, while the sum is 60.

The square root of 3698578266 is about 60815.9375986262. The cubic root of 3698578266 is about 1546.4822431605.

The spelling of 3698578266 in words is "three billion, six hundred ninety-eight million, five hundred seventy-eight thousand, two hundred sixty-six".