3665019802 has 4 divisors (see below), whose sum is σ = 5497529706. Its totient is φ = 1832509900.

The previous prime is 3665019769. The next prime is 3665019803. The reversal of 3665019802 is 2089105663.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2014304161 + 1650715641 = 44881^2 + 40629^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (3665019803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 916254949 + ... + 916254952.

Almost surely, 2^3665019802 is an apocalyptic number.

3665019802 is a deficient number, since it is larger than the sum of its proper divisors (1832509904).

3665019802 is a wasteful number, since it uses less digits than its factorization.

3665019802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1832509903.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 3665019802 is about 60539.4070172479. The cubic root of 3665019802 is about 1541.7907714276.

The spelling of 3665019802 in words is "three billion, six hundred sixty-five million, nineteen thousand, eight hundred two".