3667121851 has 2 divisors, whose sum is σ = 3667121852. Its totient is φ = 3667121850.

The previous prime is 3667121849. The next prime is 3667121879. The reversal of 3667121851 is 1581217663.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3667121851 - 2¹ = 3667121849 is a prime.

Together with 3667121849, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3667121551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1833560925 + 1833560926.

It is an arithmetic number, because the mean of its divisors is an integer number (1833560926).

Almost surely, 2^3667121851 is an apocalyptic number.

3667121851 is a deficient number, since it is larger than the sum of its proper divisors (1).

3667121851 is an equidigital number, since it uses as much as digits as its factorization.

3667121851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 40.

The square root of 3667121851 is about 60556.7655262399. The cubic root of 3667121851 is about 1542.0854765515.

It can be divided in two parts, 366 and 7121851, that added together give a palindrome (7122217).

The spelling of 3667121851 in words is "three billion, six hundred sixty-seven million, one hundred twenty-one thousand, eight hundred fifty-one".