1389016515 has 16 divisors (see below), whose sum is σ = 2226188448. Its totient is φ = 739554816.

The previous prime is 1389016513. The next prime is 1389016549. The reversal of 1389016515 is 5156109831.

1389016515 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1389016515 - 2¹ = 1389016513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1389016513) 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, 69184 + ... + 86973.

It is an arithmetic number, because the mean of its divisors is an integer number (139136778).

Almost surely, 2^1389016515 is an apocalyptic number.

1389016515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1389016515 is a deficient number, since it is larger than the sum of its proper divisors (837171933).

1389016515 is a wasteful number, since it uses less digits than its factorization.

1389016515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156758.

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 1389016515 is about 37269.5118696234. The cubic root of 1389016515 is about 1115.7557572732.

The spelling of 1389016515 in words is "one billion, three hundred eighty-nine million, sixteen thousand, five hundred fifteen".