1957440011 has 2 divisors, whose sum is σ = 1957440012. Its totient is φ = 1957440010.

The previous prime is 1957439989. The next prime is 1957440019. The reversal of 1957440011 is 1100447591.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1957440011 - 2⁶ = 1957439947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1957440011.

It is not a weakly prime, because it can be changed into another prime (1957440019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978720005 + 978720006.

It is an arithmetic number, because the mean of its divisors is an integer number (978720006).

Almost surely, 2^1957440011 is an apocalyptic number.

1957440011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1957440011 is an equidigital number, since it uses as much as digits as its factorization.

1957440011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 1957440011 is about 44242.9656668718. The cubic root of 1957440011 is about 1250.9198586021.

The spelling of 1957440011 in words is "one billion, nine hundred fifty-seven million, four hundred forty thousand, eleven".