161623041 has 8 divisors (see below), whose sum is σ = 216464640. Its totient is φ = 107265072.

The previous prime is 161623039. The next prime is 161623069. The reversal of 161623041 is 140326161.

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

It is not a de Polignac number, because 161623041 - 2¹ = 161623039 is a prime.

It is a super-2 number, since 2×161623041² = 52244014764175362, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161623031) 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, 120126 + ... + 121463.

It is an arithmetic number, because the mean of its divisors is an integer number (27058080).

Almost surely, 2^161623041 is an apocalyptic number.

It is an amenable number.

161623041 is a deficient number, since it is larger than the sum of its proper divisors (54841599).

161623041 is a wasteful number, since it uses less digits than its factorization.

161623041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241815.

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

The square root of 161623041 is about 12713.1050888443. The cubic root of 161623041 is about 544.7130223284.

The spelling of 161623041 in words is "one hundred sixty-one million, six hundred twenty-three thousand, forty-one".