3645040047 has 32 divisors (see below), whose sum is σ = 5760983040. Its totient is φ = 2025324000.

The previous prime is 3645040043. The next prime is 3645040079. The reversal of 3645040047 is 7400405463.

It is a happy number.

It is not a de Polignac number, because 3645040047 - 2² = 3645040043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645040043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74329 + ... + 113202.

It is an arithmetic number, because the mean of its divisors is an integer number (180030720).

Almost surely, 2^3645040047 is an apocalyptic number.

3645040047 is a deficient number, since it is larger than the sum of its proper divisors (2115942993).

3645040047 is a wasteful number, since it uses less digits than its factorization.

3645040047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187595.

The product of its (nonzero) digits is 40320, while the sum is 33.

The square root of 3645040047 is about 60374.1670501548. The cubic root of 3645040047 is about 1538.9839881535.

The spelling of 3645040047 in words is "three billion, six hundred forty-five million, forty thousand, forty-seven".