1630015493 has 2 divisors, whose sum is σ = 1630015494. Its totient is φ = 1630015492.

The previous prime is 1630015487. The next prime is 1630015531. The reversal of 1630015493 is 3945100361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1596641764 + 33373729 = 39958^2 + 5777^2 .

It is a cyclic number.

It is not a de Polignac number, because 1630015493 - 2⁸ = 1630015237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630015483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815007746 + 815007747.

It is an arithmetic number, because the mean of its divisors is an integer number (815007747).

Almost surely, 2^1630015493 is an apocalyptic number.

It is an amenable number.

1630015493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630015493 is an equidigital number, since it uses as much as digits as its factorization.

1630015493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 1630015493 is about 40373.4503479700. The cubic root of 1630015493 is about 1176.8756505742.

The spelling of 1630015493 in words is "one billion, six hundred thirty million, fifteen thousand, four hundred ninety-three".