161182947 has 16 divisors (see below), whose sum is σ = 227122560. Its totient is φ = 101394432.

The previous prime is 161182943. The next prime is 161182997. The reversal of 161182947 is 749281161.

It is not a de Polignac number, because 161182947 - 2² = 161182943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161182943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9148 + ... + 20150.

It is an arithmetic number, because the mean of its divisors is an integer number (14195160).

Almost surely, 2^161182947 is an apocalyptic number.

161182947 is a deficient number, since it is larger than the sum of its proper divisors (65939613).

161182947 is a wasteful number, since it uses less digits than its factorization.

161182947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11282.

The product of its digits is 24192, while the sum is 39.

The square root of 161182947 is about 12695.7846153753. The cubic root of 161182947 is about 544.2181612642.

The spelling of 161182947 in words is "one hundred sixty-one million, one hundred eighty-two thousand, nine hundred forty-seven".