3643661402 has 8 divisors (see below), whose sum is σ = 5547066816. Its totient is φ = 1794639132.

The previous prime is 3643661401. The next prime is 3643661419. The reversal of 3643661402 is 2041663463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (3643661401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13595618 + ... + 13595885.

It is an arithmetic number, because the mean of its divisors is an integer number (693383352).

Almost surely, 2^3643661402 is an apocalyptic number.

3643661402 is a deficient number, since it is larger than the sum of its proper divisors (1903405414).

3643661402 is a wasteful number, since it uses less digits than its factorization.

3643661402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27191572.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 3643661402 is about 60362.7484629386. The cubic root of 3643661402 is about 1538.7899363184.

The spelling of 3643661402 in words is "three billion, six hundred forty-three million, six hundred sixty-one thousand, four hundred two".