1001057783 has 4 divisors (see below), whose sum is σ = 1092063048. Its totient is φ = 910052520.

The previous prime is 1001057777. The next prime is 1001057803. The reversal of 1001057783 is 3877501001.

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

It is a cyclic number.

It is not a de Polignac number, because 1001057783 - 2²² = 996863479 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 (1001057713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45502616 + ... + 45502637.

It is an arithmetic number, because the mean of its divisors is an integer number (273015762).

Almost surely, 2^1001057783 is an apocalyptic number.

1001057783 is a deficient number, since it is larger than the sum of its proper divisors (91005265).

1001057783 is an equidigital number, since it uses as much as digits as its factorization.

1001057783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91005264.

The product of its (nonzero) digits is 5880, while the sum is 32.

The square root of 1001057783 is about 31639.4971989126. The cubic root of 1001057783 is about 1000.3524700836.

Adding to 1001057783 its reverse (3877501001), we get a palindrome (4878558784).

The spelling of 1001057783 in words is "one billion, one million, fifty-seven thousand, seven hundred eighty-three".