1970709865 has 16 divisors (see below), whose sum is σ = 2415054528. Its totient is φ = 1543237696.

The previous prime is 1970709847. The next prime is 1970709883. The reversal of 1970709865 is 5689070791.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1970709847) and next prime (1970709883).

It is a cyclic number.

It is not a de Polignac number, because 1970709865 - 2⁵ = 1970709833 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109002 + ... + 125788.

It is an arithmetic number, because the mean of its divisors is an integer number (150940908).

Almost surely, 2^1970709865 is an apocalyptic number.

It is an amenable number.

1970709865 is a deficient number, since it is larger than the sum of its proper divisors (444344663).

1970709865 is a wasteful number, since it uses less digits than its factorization.

1970709865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17288.

The product of its (nonzero) digits is 952560, while the sum is 52.

The square root of 1970709865 is about 44392.6780561840. The cubic root of 1970709865 is about 1253.7402352167.

The spelling of 1970709865 in words is "one billion, nine hundred seventy million, seven hundred nine thousand, eight hundred sixty-five".