1640102201 has 4 divisors (see below), whose sum is σ = 1663202304. Its totient is φ = 1617002100.

The previous prime is 1640102171. The next prime is 1640102207. The reversal of 1640102201 is 1022010461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1640102201 - 2⁶ = 1640102137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1640102201.

It is not an unprimeable number, because it can be changed into a prime (1640102207) 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, 11549945 + ... + 11550086.

It is an arithmetic number, because the mean of its divisors is an integer number (415800576).

Almost surely, 2^1640102201 is an apocalyptic number.

It is an amenable number.

1640102201 is a deficient number, since it is larger than the sum of its proper divisors (23100103).

1640102201 is an equidigital number, since it uses as much as digits as its factorization.

1640102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23100102.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1640102201 is about 40498.1752798814. The cubic root of 1640102201 is about 1179.2982040202.

Adding to 1640102201 its reverse (1022010461), we get a palindrome (2662112662).

The spelling of 1640102201 in words is "one billion, six hundred forty million, one hundred two thousand, two hundred one".