389740780951 has 4 divisors (see below), whose sum is σ = 389744438832. Its totient is φ = 389737123072.

The previous prime is 389740780937. The next prime is 389740780963. The reversal of 389740780951 is 159087047983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 389740780951 - 2²¹ = 389738683799 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 389740780951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389740780921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1664170 + ... + 1883863.

It is an arithmetic number, because the mean of its divisors is an integer number (97436109708).

Almost surely, 2^389740780951 is an apocalyptic number.

389740780951 is a deficient number, since it is larger than the sum of its proper divisors (3657881).

389740780951 is a wasteful number, since it uses less digits than its factorization.

389740780951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3657880.

The product of its (nonzero) digits is 15240960, while the sum is 61.

The spelling of 389740780951 in words is "three hundred eighty-nine billion, seven hundred forty million, seven hundred eighty thousand, nine hundred fifty-one".