161382003 has 8 divisors (see below), whose sum is σ = 227833488. Its totient is φ = 101259264.

The previous prime is 161381999. The next prime is 161382019. The reversal of 161382003 is 300283161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161382003 - 2² = 161381999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161382073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1582126 + ... + 1582227.

It is an arithmetic number, because the mean of its divisors is an integer number (28479186).

Almost surely, 2^161382003 is an apocalyptic number.

161382003 is a deficient number, since it is larger than the sum of its proper divisors (66451485).

161382003 is a wasteful number, since it uses less digits than its factorization.

161382003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164373.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 161382003 is about 12703.6216489629. The cubic root of 161382003 is about 544.4421000208.

The spelling of 161382003 in words is "one hundred sixty-one million, three hundred eighty-two thousand, three".