3654653421 has 16 divisors (see below), whose sum is σ = 5161869504. Its totient is φ = 2292067584.

The previous prime is 3654653407. The next prime is 3654653437. The reversal of 3654653421 is 1243564563.

It is not a de Polignac number, because 3654653421 - 2⁵ = 3654653389 is a prime.

It is a super-5 number, since 5×3654653421⁵ (a number of 49 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3654653421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3654653441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105006 + ... + 135408.

It is an arithmetic number, because the mean of its divisors is an integer number (322616844).

Almost surely, 2^3654653421 is an apocalyptic number.

It is an amenable number.

3654653421 is a deficient number, since it is larger than the sum of its proper divisors (1507216083).

3654653421 is a wasteful number, since it uses less digits than its factorization.

3654653421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32780.

The product of its digits is 259200, while the sum is 39.

The square root of 3654653421 is about 60453.7295871810. The cubic root of 3654653421 is about 1540.3357649002.

The spelling of 3654653421 in words is "three billion, six hundred fifty-four million, six hundred fifty-three thousand, four hundred twenty-one".