1681900301 has 2 divisors, whose sum is σ = 1681900302. Its totient is φ = 1681900300.

The previous prime is 1681900279. The next prime is 1681900307. The reversal of 1681900301 is 1030091861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1185769225 + 496131076 = 34435^2 + 22274^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1681900301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1681900307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840950150 + 840950151.

It is an arithmetic number, because the mean of its divisors is an integer number (840950151).

Almost surely, 2^1681900301 is an apocalyptic number.

It is an amenable number.

1681900301 is a deficient number, since it is larger than the sum of its proper divisors (1).

1681900301 is an equidigital number, since it uses as much as digits as its factorization.

1681900301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 1681900301 is about 41010.9778108252. The cubic root of 1681900301 is about 1189.2324455012.

The spelling of 1681900301 in words is "one billion, six hundred eighty-one million, nine hundred thousand, three hundred one".