1640214332 has 24 divisors (see below), whose sum is σ = 3052521360. Its totient is φ = 768487680.

The previous prime is 1640214287. The next prime is 1640214343. The reversal of 1640214332 is 2334120461.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37094 + ... + 68237.

It is an arithmetic number, because the mean of its divisors is an integer number (127188390).

Almost surely, 2^1640214332 is an apocalyptic number.

It is an amenable number.

1640214332 is a deficient number, since it is larger than the sum of its proper divisors (1412307028).

1640214332 is a wasteful number, since it uses less digits than its factorization.

1640214332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105581 (or 105579 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 1640214332 is about 40499.5596519271. The cubic root of 1640214332 is about 1179.3250789458.

Adding to 1640214332 its reverse (2334120461), we get a palindrome (3974334793).

The spelling of 1640214332 in words is "one billion, six hundred forty million, two hundred fourteen thousand, three hundred thirty-two".