1612200091 has 2 divisors, whose sum is σ = 1612200092. Its totient is φ = 1612200090.

The previous prime is 1612200047. The next prime is 1612200097. The reversal of 1612200091 is 1900022161.

It is a strong prime.

It is an emirp because it is prime and its reverse (1900022161) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1612200091 - 2¹³ = 1612191899 is a prime.

It is not a weakly prime, because it can be changed into another prime (1612200097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806100045 + 806100046.

It is an arithmetic number, because the mean of its divisors is an integer number (806100046).

Almost surely, 2^1612200091 is an apocalyptic number.

1612200091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612200091 is an equidigital number, since it uses as much as digits as its factorization.

1612200091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 1612200091 is about 40152.2115331148. The cubic root of 1612200091 is about 1172.5723448162.

The spelling of 1612200091 in words is "one billion, six hundred twelve million, two hundred thousand, ninety-one".