1650256013 has 4 divisors (see below), whose sum is σ = 1886006880. Its totient is φ = 1414505148.

The previous prime is 1650255961. The next prime is 1650256033. The reversal of 1650256013 is 3106520561.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-1650256013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650256033) 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, 117875423 + ... + 117875436.

It is an arithmetic number, because the mean of its divisors is an integer number (471501720).

Almost surely, 2^1650256013 is an apocalyptic number.

It is an amenable number.

1650256013 is a deficient number, since it is larger than the sum of its proper divisors (235750867).

1650256013 is an equidigital number, since it uses as much as digits as its factorization.

1650256013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235750866.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 1650256013 is about 40623.3432031388. The cubic root of 1650256013 is about 1181.7268628208.

Adding to 1650256013 its reverse (3106520561), we get a palindrome (4756776574).

The spelling of 1650256013 in words is "one billion, six hundred fifty million, two hundred fifty-six thousand, thirteen".