3654503861 has 4 divisors (see below), whose sum is σ = 3698534112. Its totient is φ = 3610473612.

The previous prime is 3654503791. The next prime is 3654503863. The reversal of 3654503861 is 1683054563.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3654503861 - 2¹⁰ = 3654502837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3654503863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22015001 + ... + 22015166.

It is an arithmetic number, because the mean of its divisors is an integer number (924633528).

Almost surely, 2^3654503861 is an apocalyptic number.

It is an amenable number.

3654503861 is a deficient number, since it is larger than the sum of its proper divisors (44030251).

3654503861 is an equidigital number, since it uses as much as digits as its factorization.

3654503861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44030250.

The product of its (nonzero) digits is 259200, while the sum is 41.

The square root of 3654503861 is about 60452.4925954257. The cubic root of 3654503861 is about 1540.3147528066.

The spelling of 3654503861 in words is "three billion, six hundred fifty-four million, five hundred three thousand, eight hundred sixty-one".