161001479 has 6 divisors (see below), whose sum is σ = 161655720. Its totient is φ = 160349840.

The previous prime is 161001443. The next prime is 161001481. The reversal of 161001479 is 974100161.

It is a de Polignac number, because none of the positive numbers 2^k-161001479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161001409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77942 + ... + 79980.

It is an arithmetic number, because the mean of its divisors is an integer number (26942620).

Almost surely, 2^161001479 is an apocalyptic number.

161001479 is a deficient number, since it is larger than the sum of its proper divisors (654241).

161001479 is an frugal number, since it uses more digits than its factorization.

161001479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601 (or 2320 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 161001479 is about 12688.6358210802. The cubic root of 161001479 is about 544.0138483625.

The spelling of 161001479 in words is "one hundred sixty-one million, one thousand, four hundred seventy-nine".