3644245242 has 48 divisors (see below), whose sum is σ = 8932708512. Its totient is φ = 1104315120.

The previous prime is 3644245237. The next prime is 3644245243. The reversal of 3644245242 is 2425424463.

3644245242 is a `hidden beast` number, since 3 + 644 + 2 + 4 + 5 + 2 + 4 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 3644245197 and 3644245206.

It is not an unprimeable number, because it can be changed into a prime (3644245243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 335493 + ... + 346184.

It is an arithmetic number, because the mean of its divisors is an integer number (186098094).

Almost surely, 2^3644245242 is an apocalyptic number.

3644245242 is an abundant number, since it is smaller than the sum of its proper divisors (5288463270).

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

3644245242 is a wasteful number, since it uses less digits than its factorization.

3644245242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681705 (or 681693 counting only the distinct ones).

The product of its digits is 184320, while the sum is 36.

The square root of 3644245242 is about 60367.5843644584. The cubic root of 3644245242 is about 1538.8721209706.

The spelling of 3644245242 in words is "three billion, six hundred forty-four million, two hundred forty-five thousand, two hundred forty-two".