1640335106 has 8 divisors (see below), whose sum is σ = 2464696080. Its totient is φ = 818769748.

The previous prime is 1640335069. The next prime is 1640335121. The reversal of 1640335106 is 6015330461.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 697436 + ... + 699783.

It is an arithmetic number, because the mean of its divisors is an integer number (308087010).

Almost surely, 2^1640335106 is an apocalyptic number.

1640335106 is a deficient number, since it is larger than the sum of its proper divisors (824360974).

1640335106 is a wasteful number, since it uses less digits than its factorization.

1640335106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397808.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 1640335106 is about 40501.0506777293. The cubic root of 1640335106 is about 1179.3540240067.

Adding to 1640335106 its reverse (6015330461), we get a palindrome (7655665567).

The spelling of 1640335106 in words is "one billion, six hundred forty million, three hundred thirty-five thousand, one hundred six".