1971079516 has 12 divisors (see below), whose sum is σ = 3942159088. Its totient is φ = 844748352.

The previous prime is 1971079489. The next prime is 1971079543. The reversal of 1971079516 is 6159701791.

It is an interprime number because it is at equal distance from previous prime (1971079489) and next prime (1971079543).

1971079516 is an admirable number.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 35197821 + ... + 35197876.

Almost surely, 2^1971079516 is an apocalyptic number.

It is an amenable number.

1971079516 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1971079516 is a wasteful number, since it uses less digits than its factorization.

1971079516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70395708 (or 70395706 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 46.

The square root of 1971079516 is about 44396.8412840373. The cubic root of 1971079516 is about 1253.8186193845.

The spelling of 1971079516 in words is "one billion, nine hundred seventy-one million, seventy-nine thousand, five hundred sixteen".