3654521887 has 2 divisors, whose sum is σ = 3654521888. Its totient is φ = 3654521886.

The previous prime is 3654521861. The next prime is 3654521929. The reversal of 3654521887 is 7881254563.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3654521887 - 2¹⁵ = 3654489119 is a prime.

It is a super-3 number, since 3×3654521887³ (a number of 30 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3654521887.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3654521837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1827260943 + 1827260944.

It is an arithmetic number, because the mean of its divisors is an integer number (1827260944).

Almost surely, 2^3654521887 is an apocalyptic number.

3654521887 is a deficient number, since it is larger than the sum of its proper divisors (1).

3654521887 is an equidigital number, since it uses as much as digits as its factorization.

3654521887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1612800, while the sum is 49.

The square root of 3654521887 is about 60452.6416875226. The cubic root of 3654521887 is about 1540.3172853591.

The spelling of 3654521887 in words is "three billion, six hundred fifty-four million, five hundred twenty-one thousand, eight hundred eighty-seven".