1640850924 has 24 divisors (see below), whose sum is σ = 3829432320. Its totient is φ = 546838864.

The previous prime is 1640850907. The next prime is 1640850929. The reversal of 1640850924 is 4290580461.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1640850929) by changing a digit.

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, 65557 + ... + 87059.

It is an arithmetic number, because the mean of its divisors is an integer number (159559680).

Almost surely, 2^1640850924 is an apocalyptic number.

It is an amenable number.

1640850924 is an abundant number, since it is smaller than the sum of its proper divisors (2188581396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1640850924 is a wasteful number, since it uses less digits than its factorization.

1640850924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27869 (or 27867 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1640850924 is about 40507.4181354477. The cubic root of 1640850924 is about 1179.4776305140.

The spelling of 1640850924 in words is "one billion, six hundred forty million, eight hundred fifty thousand, nine hundred twenty-four".