1630513457 has 2 divisors, whose sum is σ = 1630513458. Its totient is φ = 1630513456.

The previous prime is 1630513453. The next prime is 1630513513. The reversal of 1630513457 is 7543150361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 958459681 + 672053776 = 30959^2 + 25924^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630513457 - 2² = 1630513453 is a prime.

It is not a weakly prime, because it can be changed into another prime (1630513453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815256728 + 815256729.

It is an arithmetic number, because the mean of its divisors is an integer number (815256729).

Almost surely, 2^1630513457 is an apocalyptic number.

It is an amenable number.

1630513457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630513457 is an equidigital number, since it uses as much as digits as its factorization.

1630513457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 1630513457 is about 40379.6168505844. The cubic root of 1630513457 is about 1176.9954821629.

The spelling of 1630513457 in words is "one billion, six hundred thirty million, five hundred thirteen thousand, four hundred fifty-seven".