920617683739 has 4 divisors (see below), whose sum is σ = 991434428656. Its totient is φ = 849800938824.

The previous prime is 920617683737. The next prime is 920617683761. The reversal of 920617683739 is 937386716029.

920617683739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 937386716029 = 40543 ⋅23120803.

It is a cyclic number.

It is not a de Polignac number, because 920617683739 - 2¹ = 920617683737 is a prime.

It is a super-2 number, since 2×920617683739² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (920617683737) 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, 35408372439 + ... + 35408372464.

It is an arithmetic number, because the mean of its divisors is an integer number (247858607164).

Almost surely, 2^920617683739 is an apocalyptic number.

920617683739 is a deficient number, since it is larger than the sum of its proper divisors (70816744917).

920617683739 is a wasteful number, since it uses less digits than its factorization.

920617683739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70816744916.

The product of its (nonzero) digits is 20575296, while the sum is 61.

The spelling of 920617683739 in words is "nine hundred twenty billion, six hundred seventeen million, six hundred eighty-three thousand, seven hundred thirty-nine".