161630847 has 12 divisors (see below), whose sum is σ = 266819280. Its totient is φ = 92360448.

The previous prime is 161630839. The next prime is 161630857. The reversal of 161630847 is 748036161.

161630847 is a `hidden beast` number, since 1 + 616 + 30 + 8 + 4 + 7 = 666.

It is not a de Polignac number, because 161630847 - 2³ = 161630839 is a prime.

It is a super-2 number, since 2×161630847² = 52249061403874818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161630827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1282722 + ... + 1282847.

It is an arithmetic number, because the mean of its divisors is an integer number (22234940).

Almost surely, 2^161630847 is an apocalyptic number.

161630847 is a deficient number, since it is larger than the sum of its proper divisors (105188433).

161630847 is a wasteful number, since it uses less digits than its factorization.

161630847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2565582 (or 2565579 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 161630847 is about 12713.4120911736. The cubic root of 161630847 is about 544.7217916255.

The spelling of 161630847 in words is "one hundred sixty-one million, six hundred thirty thousand, eight hundred forty-seven".