1302921149 has 2 divisors, whose sum is σ = 1302921150. Its totient is φ = 1302921148.

The previous prime is 1302921121. The next prime is 1302921163. The reversal of 1302921149 is 9411292031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1231518649 + 71402500 = 35093^2 + 8450^2 .

It is an emirp because it is prime and its reverse (9411292031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1302921149 - 2⁸ = 1302920893 is a prime.

It is a super-2 number, since 2×1302921149² = 3395207041022960402, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1302921349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651460574 + 651460575.

It is an arithmetic number, because the mean of its divisors is an integer number (651460575).

Almost surely, 2^1302921149 is an apocalyptic number.

It is an amenable number.

1302921149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1302921149 is an equidigital number, since it uses as much as digits as its factorization.

1302921149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 1302921149 is about 36095.9990719193. Note that the first 3 decimals coincide. The cubic root of 1302921149 is about 1092.2097385131.

The spelling of 1302921149 in words is "one billion, three hundred two million, nine hundred twenty-one thousand, one hundred forty-nine".