3645274451 has 32 divisors (see below), whose sum is σ = 4650240000. Its totient is φ = 2779297920.

The previous prime is 3645274433. The next prime is 3645274459. The reversal of 3645274451 is 1544725463.

It is not a de Polignac number, because 3645274451 - 2²² = 3641080147 is a prime.

It is a super-2 number, since 2×3645274451² = 26576051646226702802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3645274399 and 3645274408.

It is not an unprimeable number, because it can be changed into a prime (3645274459) 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 31 ways as a sum of consecutive naturals, for example, 1822550 + ... + 1824548.

It is an arithmetic number, because the mean of its divisors is an integer number (145320000).

Almost surely, 2^3645274451 is an apocalyptic number.

3645274451 is a deficient number, since it is larger than the sum of its proper divisors (1004965549).

3645274451 is a wasteful number, since it uses less digits than its factorization.

3645274451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2739.

The product of its digits is 403200, while the sum is 41.

The square root of 3645274451 is about 60376.1082796829. The cubic root of 3645274451 is about 1539.0169769333.

The spelling of 3645274451 in words is "three billion, six hundred forty-five million, two hundred seventy-four thousand, four hundred fifty-one".