1640222924 has 12 divisors (see below), whose sum is σ = 2873858400. Its totient is φ = 819120528.

The previous prime is 1640222923. The next prime is 1640222957. The reversal of 1640222924 is 4292220461.

It is not an unprimeable number, because it can be changed into a prime (1640222923) 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, 244004 + ... + 250635.

It is an arithmetic number, because the mean of its divisors is an integer number (239488200).

Almost surely, 2^1640222924 is an apocalyptic number.

It is an amenable number.

1640222924 is a deficient number, since it is larger than the sum of its proper divisors (1233635476).

1640222924 is a wasteful number, since it uses less digits than its factorization.

1640222924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495472 (or 495470 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 1640222924 is about 40499.6657270156. The cubic root of 1640222924 is about 1179.3271381773.

The spelling of 1640222924 in words is "one billion, six hundred forty million, two hundred twenty-two thousand, nine hundred twenty-four".