161948515 has 8 divisors (see below), whose sum is σ = 197075808. Its totient is φ = 127733760.

The previous prime is 161948509. The next prime is 161948539. The reversal of 161948515 is 515849161.

161948515 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 161948515 - 2¹⁹ = 161424227 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227742 + ... + 228451.

It is an arithmetic number, because the mean of its divisors is an integer number (24634476).

Almost surely, 2^161948515 is an apocalyptic number.

161948515 is a deficient number, since it is larger than the sum of its proper divisors (35127293).

161948515 is an equidigital number, since it uses as much as digits as its factorization.

161948515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456269.

The product of its digits is 43200, while the sum is 40.

The square root of 161948515 is about 12725.8993788258. The cubic root of 161948515 is about 545.0784220680.

It can be divided in two parts, 161 and 948515, that added together give a square (948676 = 974²).

The spelling of 161948515 in words is "one hundred sixty-one million, nine hundred forty-eight thousand, five hundred fifteen".