3654131646 has 32 divisors (see below), whose sum is σ = 7998167808. Its totient is φ = 1103768640.

The previous prime is 3654131639. The next prime is 3654131681. The reversal of 3654131646 is 6461314563.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67786 + ... + 109101.

It is an arithmetic number, because the mean of its divisors is an integer number (249942744).

Almost surely, 2^3654131646 is an apocalyptic number.

3654131646 is an abundant number, since it is smaller than the sum of its proper divisors (4344036162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3654131646 is a wasteful number, since it uses less digits than its factorization.

3654131646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177216.

The product of its digits is 155520, while the sum is 39.

The square root of 3654131646 is about 60449.4139425685. The cubic root of 3654131646 is about 1540.2624568139.

The spelling of 3654131646 in words is "three billion, six hundred fifty-four million, one hundred thirty-one thousand, six hundred forty-six".