1430730649 has 2 divisors, whose sum is σ = 1430730650. Its totient is φ = 1430730648.

The previous prime is 1430730607. The next prime is 1430730733. The reversal of 1430730649 is 9460370341.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1194186249 + 236544400 = 34557^2 + 15380^2 .

It is a cyclic number.

It is not a de Polignac number, because 1430730649 - 2²³ = 1422342041 is a prime.

It is a super-2 number, since 2×1430730649² = 4093980379975922402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1430730449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715365324 + 715365325.

It is an arithmetic number, because the mean of its divisors is an integer number (715365325).

Almost surely, 2^1430730649 is an apocalyptic number.

It is an amenable number.

1430730649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1430730649 is an equidigital number, since it uses as much as digits as its factorization.

1430730649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 1430730649 is about 37825.0003172505. Note that the first 3 decimals coincide. The cubic root of 1430730649 is about 1126.8150188722.

The spelling of 1430730649 in words is "one billion, four hundred thirty million, seven hundred thirty thousand, six hundred forty-nine".