3646385499 has 16 divisors (see below), whose sum is σ = 5032576800. Its totient is φ = 2345661696.

The previous prime is 3646385497. The next prime is 3646385563. The reversal of 3646385499 is 9945836463.

It is not a de Polignac number, because 3646385499 - 2¹ = 3646385497 is a prime.

It is a super-2 number, since 2×3646385499² = 26592254414634958002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3646385497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140557 + ... + 164465.

It is an arithmetic number, because the mean of its divisors is an integer number (314536050).

Almost surely, 2^3646385499 is an apocalyptic number.

3646385499 is a deficient number, since it is larger than the sum of its proper divisors (1386191301).

3646385499 is a wasteful number, since it uses less digits than its factorization.

3646385499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25694.

The product of its digits is 16796160, while the sum is 57.

The square root of 3646385499 is about 60385.3086354620. The cubic root of 3646385499 is about 1539.1733207206.

The spelling of 3646385499 in words is "three billion, six hundred forty-six million, three hundred eighty-five thousand, four hundred ninety-nine".