1630121741 has 2 divisors, whose sum is σ = 1630121742. Its totient is φ = 1630121740.

The previous prime is 1630121707. The next prime is 1630121807. The reversal of 1630121741 is 1471210361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1509011716 + 121110025 = 38846^2 + 11005^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630121741 - 2⁶ = 1630121677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1630121741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630121341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815060870 + 815060871.

It is an arithmetic number, because the mean of its divisors is an integer number (815060871).

Almost surely, 2^1630121741 is an apocalyptic number.

It is an amenable number.

1630121741 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630121741 is an equidigital number, since it uses as much as digits as its factorization.

1630121741 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1630121741 is about 40374.7661417376. The cubic root of 1630121741 is about 1176.9012204676.

The spelling of 1630121741 in words is "one billion, six hundred thirty million, one hundred twenty-one thousand, seven hundred forty-one".