1912485851 has 2 divisors, whose sum is σ = 1912485852. Its totient is φ = 1912485850.

The previous prime is 1912485791. The next prime is 1912485889. The reversal of 1912485851 is 1585842191.

It is a strong prime.

It is an emirp because it is prime and its reverse (1585842191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1912485851 - 2²² = 1908291547 is a prime.

It is not a weakly prime, because it can be changed into another prime (1912487851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956242925 + 956242926.

It is an arithmetic number, because the mean of its divisors is an integer number (956242926).

Almost surely, 2^1912485851 is an apocalyptic number.

1912485851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1912485851 is an equidigital number, since it uses as much as digits as its factorization.

1912485851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 115200, while the sum is 44.

The square root of 1912485851 is about 43731.9774421418. The cubic root of 1912485851 is about 1241.2694792503.

The spelling of 1912485851 in words is "one billion, nine hundred twelve million, four hundred eighty-five thousand, eight hundred fifty-one".