Base | Representation |
---|---|
bin | 11100000101001010… |
… | …011110010000110101 |
3 | 2212211022011221121221 |
4 | 130011022132100311 |
5 | 443222224340144 |
6 | 21503521110341 |
7 | 2115115456462 |
oct | 340512362065 |
9 | 85738157557 |
10 | 30151402549 |
11 | 11872754004 |
12 | 5a157883b1 |
13 | 2ac68654c8 |
14 | 16605ba669 |
15 | bb7083d84 |
hex | 70529e435 |
30151402549 has 2 divisors, whose sum is σ = 30151402550. Its totient is φ = 30151402548.
The previous prime is 30151402531. The next prime is 30151402553. The reversal of 30151402549 is 94520415103.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 24378138225 + 5773264324 = 156135^2 + 75982^2 .
It is an emirp because it is prime and its reverse (94520415103) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 30151402549 - 223 = 30143013941 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30151402849) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15075701274 + 15075701275.
It is an arithmetic number, because the mean of its divisors is an integer number (15075701275).
Almost surely, 230151402549 is an apocalyptic number.
It is an amenable number.
30151402549 is a deficient number, since it is larger than the sum of its proper divisors (1).
30151402549 is an equidigital number, since it uses as much as digits as its factorization.
30151402549 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 21600, while the sum is 34.
The spelling of 30151402549 in words is "thirty billion, one hundred fifty-one million, four hundred two thousand, five hundred forty-nine".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.081 sec. • engine limits •