161542467 has 6 divisors (see below), whose sum is σ = 233339132. Its totient is φ = 107694972.

The previous prime is 161542453. The next prime is 161542487. The reversal of 161542467 is 764245161.

It is a de Polignac number, because none of the positive numbers 2^k-161542467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161542417) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8974573 + ... + 8974590.

Almost surely, 2^161542467 is an apocalyptic number.

161542467 is a deficient number, since it is larger than the sum of its proper divisors (71796665).

161542467 is a wasteful number, since it uses less digits than its factorization.

161542467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17949169 (or 17949166 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 161542467 is about 12709.9357590823. The cubic root of 161542467 is about 544.6224886143.

The spelling of 161542467 in words is "one hundred sixty-one million, five hundred forty-two thousand, four hundred sixty-seven".