389122987051 has 16 divisors (see below), whose sum is σ = 403276374016. Its totient is φ = 375070500000.

The previous prime is 389122987031. The next prime is 389122987069. The reversal of 389122987051 is 150789221983.

It is a happy number.

It is a 5-Lehmer number, since φ(389122987051) divides (389122987051-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 389122987051 - 2¹¹ = 389122985003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389122986983 and 389122987001.

It is not an unprimeable number, because it can be changed into a prime (389122987031) 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, 52931026 + ... + 52938376.

It is an arithmetic number, because the mean of its divisors is an integer number (25204773376).

Almost surely, 2^389122987051 is an apocalyptic number.

389122987051 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

389122987051 is the 360150-th hex number.

389122987051 is a deficient number, since it is larger than the sum of its proper divisors (14153386965).

389122987051 is a wasteful number, since it uses less digits than its factorization.

389122987051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13954.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 389122987051 in words is "three hundred eighty-nine billion, one hundred twenty-two million, nine hundred eighty-seven thousand, fifty-one".