1630948243 has 2 divisors, whose sum is σ = 1630948244. Its totient is φ = 1630948242.

The previous prime is 1630948181. The next prime is 1630948279. The reversal of 1630948243 is 3428490361.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1630948243 - 2²⁹ = 1094077331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1630948196 and 1630948205.

It is not a weakly prime, because it can be changed into another prime (1630948283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815474121 + 815474122.

It is an arithmetic number, because the mean of its divisors is an integer number (815474122).

Almost surely, 2^1630948243 is an apocalyptic number.

1630948243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630948243 is an equidigital number, since it uses as much as digits as its factorization.

1630948243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 1630948243 is about 40385.0002228550. Note that the first 3 decimals coincide. The cubic root of 1630948243 is about 1177.1000904539.

The spelling of 1630948243 in words is "one billion, six hundred thirty million, nine hundred forty-eight thousand, two hundred forty-three".