161545347 has 10 divisors (see below), whose sum is σ = 241320948. Its totient is φ = 107696844.

The previous prime is 161545343. The next prime is 161545369. The reversal of 161545347 is 743545161.

161545347 is a `hidden beast` number, since 1 + 615 + 4 + 5 + 34 + 7 = 666.

It is not a de Polignac number, because 161545347 - 2² = 161545343 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161545343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 997113 + ... + 997274.

Almost surely, 2^161545347 is an apocalyptic number.

161545347 is a deficient number, since it is larger than the sum of its proper divisors (79775601).

161545347 is an equidigital number, since it uses as much as digits as its factorization.

161545347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1994399 (or 1994390 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 161545347 is about 12710.0490557669. The cubic root of 161545347 is about 544.6257251285.

The spelling of 161545347 in words is "one hundred sixty-one million, five hundred forty-five thousand, three hundred forty-seven".