1630142473 has 2 divisors, whose sum is σ = 1630142474. Its totient is φ = 1630142472.

The previous prime is 1630142453. The next prime is 1630142483. The reversal of 1630142473 is 3742410361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1251178384 + 378964089 = 35372^2 + 19467^2 .

It is an emirp because it is prime and its reverse (3742410361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1630142473 - 2²⁵ = 1596588041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1630142443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815071236 + 815071237.

It is an arithmetic number, because the mean of its divisors is an integer number (815071237).

Almost surely, 2^1630142473 is an apocalyptic number.

It is an amenable number.

1630142473 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630142473 is an equidigital number, since it uses as much as digits as its factorization.

1630142473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 1630142473 is about 40375.0228854424. The cubic root of 1630142473 is about 1176.9062097499.

The spelling of 1630142473 in words is "one billion, six hundred thirty million, one hundred forty-two thousand, four hundred seventy-three".