389508694481 has 16 divisors (see below), whose sum is σ = 401746547280. Its totient is φ = 377362022400.

The previous prime is 389508694469. The next prime is 389508694517. The reversal of 389508694481 is 184496805983.

It can be written as a sum of positive squares in 8 ways, for example, as 3221584081 + 386287110400 = 56759^2 + 621520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389508694481 is a prime.

It is a super-2 number, since 2×389508694481² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389508694411) 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, 31383005 + ... + 31395413.

It is an arithmetic number, because the mean of its divisors is an integer number (25109159205).

Almost surely, 2^389508694481 is an apocalyptic number.

It is an amenable number.

389508694481 is a deficient number, since it is larger than the sum of its proper divisors (12237852799).

389508694481 is a wasteful number, since it uses less digits than its factorization.

389508694481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16004.

The product of its (nonzero) digits is 59719680, while the sum is 65.

The spelling of 389508694481 in words is "three hundred eighty-nine billion, five hundred eight million, six hundred ninety-four thousand, four hundred eighty-one".