971365538 has 32 divisors (see below), whose sum is σ = 1801880640. Its totient is φ = 386112960.

The previous prime is 971365511. The next prime is 971365543. The reversal of 971365538 is 835563179.

It is a junction number, because it is equal to n+sod(n) for n = 971365492 and 971365501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83945 + ... + 94812.

It is an arithmetic number, because the mean of its divisors is an integer number (56308770).

Almost surely, 2^971365538 is an apocalyptic number.

971365538 is a deficient number, since it is larger than the sum of its proper divisors (830515102).

971365538 is a wasteful number, since it uses less digits than its factorization.

971365538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178802.

The product of its digits is 680400, while the sum is 47.

The square root of 971365538 is about 31166.7376861936. The cubic root of 971365538 is about 990.3625981921.

The spelling of 971365538 in words is "nine hundred seventy-one million, three hundred sixty-five thousand, five hundred thirty-eight".