1893945107 has 2 divisors, whose sum is σ = 1893945108. Its totient is φ = 1893945106.

The previous prime is 1893945083. The next prime is 1893945127. The reversal of 1893945107 is 7015493981.

It is a strong prime.

It is an emirp because it is prime and its reverse (7015493981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1893945107 - 2²⁴ = 1877167891 is a prime.

It is not a weakly prime, because it can be changed into another prime (1893945127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 946972553 + 946972554.

It is an arithmetic number, because the mean of its divisors is an integer number (946972554).

Almost surely, 2^1893945107 is an apocalyptic number.

1893945107 is a deficient number, since it is larger than the sum of its proper divisors (1).

1893945107 is an equidigital number, since it uses as much as digits as its factorization.

1893945107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 47.

The square root of 1893945107 is about 43519.4796269441. The cubic root of 1893945107 is about 1237.2452519458.

It can be divided in two parts, 18939 and 45107, that added together give a palindrome (64046).

The spelling of 1893945107 in words is "one billion, eight hundred ninety-three million, nine hundred forty-five thousand, one hundred seven".