1430202989 has 2 divisors, whose sum is σ = 1430202990. Its totient is φ = 1430202988.

The previous prime is 1430202923. The next prime is 1430203001. The reversal of 1430202989 is 9892020341.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 808947364 + 621255625 = 28442^2 + 24925^2 .

It is a cyclic number.

It is not a de Polignac number, because 1430202989 - 2¹² = 1430198893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1430202289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 715101494 + 715101495.

It is an arithmetic number, because the mean of its divisors is an integer number (715101495).

Almost surely, 2^1430202989 is an apocalyptic number.

It is an amenable number.

1430202989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1430202989 is an equidigital number, since it uses as much as digits as its factorization.

1430202989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1430202989 is about 37818.0246575624. The cubic root of 1430202989 is about 1126.6764769968.

The spelling of 1430202989 in words is "one billion, four hundred thirty million, two hundred two thousand, nine hundred eighty-nine".