Search a number
-
+
1380318371 is a prime number
BaseRepresentation
bin101001001000101…
…1111110010100011
310120012022102211122
41102101133302203
510311330141441
6344545002455
746130340545
oct12221376243
93505272748
101380318371
11649176693
1232632342b
1318cc7a243
14d146b695
15812a834b
hex5245fca3

1380318371 has 2 divisors, whose sum is σ = 1380318372. Its totient is φ = 1380318370.

The previous prime is 1380318353. The next prime is 1380318377. The reversal of 1380318371 is 1738130831.

It is a strong prime.

It is an emirp because it is prime and its reverse (1738130831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1380318371 - 210 = 1380317347 is a prime.

It is not a weakly prime, because it can be changed into another prime (1380318377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690159185 + 690159186.

It is an arithmetic number, because the mean of its divisors is an integer number (690159186).

Almost surely, 21380318371 is an apocalyptic number.

1380318371 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380318371 is an equidigital number, since it uses as much as digits as its factorization.

1380318371 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1380318371 is about 37152.6361245067. The cubic root of 1380318371 is about 1113.4218918424.

The spelling of 1380318371 in words is "one billion, three hundred eighty million, three hundred eighteen thousand, three hundred seventy-one".