161015270 has 32 divisors (see below), whose sum is σ = 312711840. Its totient is φ = 59339520.

The previous prime is 161015251. The next prime is 161015273. The reversal of 161015270 is 72510161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161015273) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 104405 + ... + 105935.

It is an arithmetic number, because the mean of its divisors is an integer number (9772245).

Almost surely, 2^161015270 is an apocalyptic number.

161015270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161015270 is a deficient number, since it is larger than the sum of its proper divisors (151696570).

161015270 is a wasteful number, since it uses less digits than its factorization.

161015270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 161015270 is about 12689.1792484778. The cubic root of 161015270 is about 544.0293808922.

The spelling of 161015270 in words is "one hundred sixty-one million, fifteen thousand, two hundred seventy".