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1900300807 is a prime number
BaseRepresentation
bin111000101000100…
…0100101000000111
311220102202021122101
41301101010220013
512342434111212
6512322012531
765043201406
oct16121045007
94812667571
101900300807
11895741139
124504a7147
1324390a762
1414054563d
15b1c6c157
hex71444a07

1900300807 has 2 divisors, whose sum is σ = 1900300808. Its totient is φ = 1900300806.

The previous prime is 1900300739. The next prime is 1900300813. The reversal of 1900300807 is 7080030091.

It is a strong prime.

It is an emirp because it is prime and its reverse (7080030091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1900300807 - 27 = 1900300679 is a prime.

It is a super-2 number, since 2×19003008072 = 7222286314169702498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1900300007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950150403 + 950150404.

It is an arithmetic number, because the mean of its divisors is an integer number (950150404).

Almost surely, 21900300807 is an apocalyptic number.

1900300807 is a deficient number, since it is larger than the sum of its proper divisors (1).

1900300807 is an equidigital number, since it uses as much as digits as its factorization.

1900300807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1900300807 is about 43592.4397917804. The cubic root of 1900300807 is about 1238.6276890265.

Adding to 1900300807 its reverse (7080030091), we get a palindrome (8980330898).

The spelling of 1900300807 in words is "one billion, nine hundred million, three hundred thousand, eight hundred seven".