1940627957 has 4 divisors (see below), whose sum is σ = 1941003756. Its totient is φ = 1940252160.

The previous prime is 1940627951. The next prime is 1940627981. The reversal of 1940627957 is 7597260491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1183772836 + 756855121 = 34406^2 + 27511^2 .

It is a cyclic number.

It is not a de Polignac number, because 1940627957 - 2⁶ = 1940627893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940627951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180044 + ... + 190517.

It is an arithmetic number, because the mean of its divisors is an integer number (485250939).

Almost surely, 2^1940627957 is an apocalyptic number.

It is an amenable number.

1940627957 is a deficient number, since it is larger than the sum of its proper divisors (375799).

1940627957 is an equidigital number, since it uses as much as digits as its factorization.

1940627957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375798.

The product of its (nonzero) digits is 952560, while the sum is 50.

The square root of 1940627957 is about 44052.5590289599. The cubic root of 1940627957 is about 1247.3282576629.

The spelling of 1940627957 in words is "one billion, nine hundred forty million, six hundred twenty-seven thousand, nine hundred fifty-seven".