1302143389 has 2 divisors, whose sum is σ = 1302143390. Its totient is φ = 1302143388.

The previous prime is 1302143371. The next prime is 1302143411. The reversal of 1302143389 is 9833412031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1174227289 + 127916100 = 34267^2 + 11310^2 .

It is a cyclic number.

It is not a de Polignac number, because 1302143389 - 2⁷ = 1302143261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1302143309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651071694 + 651071695.

It is an arithmetic number, because the mean of its divisors is an integer number (651071695).

Almost surely, 2^1302143389 is an apocalyptic number.

It is an amenable number.

1302143389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302143389 is an equidigital number, since it uses as much as digits as its factorization.

1302143389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1302143389 is about 36085.2239704841. The cubic root of 1302143389 is about 1091.9923689686.

The spelling of 1302143389 in words is "one billion, three hundred two million, one hundred forty-three thousand, three hundred eighty-nine".