845161761 has 8 divisors (see below), whose sum is σ = 1165740480. Its totient is φ = 544012112.

The previous prime is 845161739. The next prime is 845161763. The reversal of 845161761 is 167161548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 845161761 - 2¹⁴ = 845145377 is a prime.

It is a super-2 number, since 2×845161761² = 1428596804513242242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (845161763) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4857165 + ... + 4857338.

It is an arithmetic number, because the mean of its divisors is an integer number (145717560).

Almost surely, 2^845161761 is an apocalyptic number.

It is an amenable number.

845161761 is a deficient number, since it is larger than the sum of its proper divisors (320578719).

845161761 is a wasteful number, since it uses less digits than its factorization.

845161761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9714535.

The product of its digits is 40320, while the sum is 39.

The square root of 845161761 is about 29071.6659481358. The cubic root of 845161761 is about 945.4675181705.

The spelling of 845161761 in words is "eight hundred forty-five million, one hundred sixty-one thousand, seven hundred sixty-one".