1651606013 has 2 divisors, whose sum is σ = 1651606014. Its totient is φ = 1651606012.

The previous prime is 1651606007. The next prime is 1651606031. The reversal of 1651606013 is 3106061561.

Together with next prime (1651606031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1572360409 + 79245604 = 39653^2 + 8902^2 .

It is a cyclic number.

It is not a de Polignac number, because 1651606013 - 2⁸ = 1651605757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1651606043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825803006 + 825803007.

It is an arithmetic number, because the mean of its divisors is an integer number (825803007).

Almost surely, 2^1651606013 is an apocalyptic number.

It is an amenable number.

1651606013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1651606013 is an equidigital number, since it uses as much as digits as its factorization.

1651606013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 1651606013 is about 40639.9558685784. The cubic root of 1651606013 is about 1182.0490141369.

Adding to 1651606013 its reverse (3106061561), we get a palindrome (4757667574).

The spelling of 1651606013 in words is "one billion, six hundred fifty-one million, six hundred six thousand, thirteen".