3654491841 has 96 divisors (see below), whose sum is σ = 7122705408. Its totient is φ = 1743707520.

The previous prime is 3654491831. The next prime is 3654491857. The reversal of 3654491841 is 1481944563.

3654491841 is a `hidden beast` number, since 36 + 54 + 491 + 84 + 1 = 666.

It is not a de Polignac number, because 3654491841 - 2⁷ = 3654491713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3654491821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2044150 + ... + 2045936.

It is an arithmetic number, because the mean of its divisors is an integer number (74194848).

Almost surely, 2^3654491841 is an apocalyptic number.

It is an amenable number.

3654491841 is a deficient number, since it is larger than the sum of its proper divisors (3468213567).

3654491841 is a wasteful number, since it uses less digits than its factorization.

3654491841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051 (or 2048 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 3654491841 is about 60452.3931784342. The cubic root of 3654491841 is about 1540.3130640590.

The spelling of 3654491841 in words is "three billion, six hundred fifty-four million, four hundred ninety-one thousand, eight hundred forty-one".