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1050128789 is a prime number
BaseRepresentation
bin111110100101111…
…011000110010101
32201012000001212212
4332211323012111
54122313110124
6252111523205
735010642653
oct7645730625
92635001785
101050128789
11499852336
12253829505
1313973c0a8
149d679dd3
15622d440e
hex3e97b195

1050128789 has 2 divisors, whose sum is σ = 1050128790. Its totient is φ = 1050128788.

The previous prime is 1050128759. The next prime is 1050128801. The reversal of 1050128789 is 9878210501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1006792900 + 43335889 = 31730^2 + 6583^2 .

It is a cyclic number.

It is not a de Polignac number, because 1050128789 - 212 = 1050124693 is a prime.

It is a super-2 number, since 2×10501287892 = 2205540946973213042, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1050128759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525064394 + 525064395.

It is an arithmetic number, because the mean of its divisors is an integer number (525064395).

Almost surely, 21050128789 is an apocalyptic number.

It is an amenable number.

1050128789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1050128789 is an equidigital number, since it uses as much as digits as its factorization.

1050128789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 41.

The square root of 1050128789 is about 32405.6906885195. The cubic root of 1050128789 is about 1016.4379108843.

The spelling of 1050128789 in words is "one billion, fifty million, one hundred twenty-eight thousand, seven hundred eighty-nine".