1940345459 has 32 divisors (see below), whose sum is σ = 2261833728. Its totient is φ = 1651104000.

The previous prime is 1940345443. The next prime is 1940345461. The reversal of 1940345459 is 9545430491.

It is not a de Polignac number, because 1940345459 - 2⁴ = 1940345443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1940345359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 709124 + ... + 711854.

It is an arithmetic number, because the mean of its divisors is an integer number (70682304).

Almost surely, 2^1940345459 is an apocalyptic number.

1940345459 is a deficient number, since it is larger than the sum of its proper divisors (321488269).

1940345459 is a wasteful number, since it uses less digits than its factorization.

1940345459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 1940345459 is about 44049.3525378070. The cubic root of 1940345459 is about 1247.2677300321.

The spelling of 1940345459 in words is "one billion, nine hundred forty million, three hundred forty-five thousand, four hundred fifty-nine".