3644798155 has 16 divisors (see below), whose sum is σ = 4721302080. Its totient is φ = 2692885888.

The previous prime is 3644798149. The next prime is 3644798167. The reversal of 3644798155 is 5518974463.

It is a cyclic number.

It is not a de Polignac number, because 3644798155 - 2⁹ = 3644797643 is a prime.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 543112 + ... + 549781.

It is an arithmetic number, because the mean of its divisors is an integer number (295081380).

Almost surely, 2^3644798155 is an apocalyptic number.

3644798155 is a deficient number, since it is larger than the sum of its proper divisors (1076503925).

3644798155 is a wasteful number, since it uses less digits than its factorization.

3644798155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092950.

The product of its digits is 3628800, while the sum is 52.

The square root of 3644798155 is about 60372.1637429039. The cubic root of 3644798155 is about 1538.9499440694.

The spelling of 3644798155 in words is "three billion, six hundred forty-four million, seven hundred ninety-eight thousand, one hundred fifty-five".