1940924865 has 16 divisors (see below), whose sum is σ = 3387796416. Its totient is φ = 941054400.

The previous prime is 1940924861. The next prime is 1940924899. The reversal of 1940924865 is 5684290491.

It is not a de Polignac number, because 1940924865 - 2² = 1940924861 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1940924861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5881426 + ... + 5881755.

It is an arithmetic number, because the mean of its divisors is an integer number (211737276).

Almost surely, 2^1940924865 is an apocalyptic number.

1940924865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1940924865 is a deficient number, since it is larger than the sum of its proper divisors (1446871551).

1940924865 is a wasteful number, since it uses less digits than its factorization.

1940924865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11763200.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 1940924865 is about 44055.9288291599. The cubic root of 1940924865 is about 1247.3918664296.

The spelling of 1940924865 in words is "one billion, nine hundred forty million, nine hundred twenty-four thousand, eight hundred sixty-five".