161381114 has 16 divisors (see below), whose sum is σ = 250861320. Its totient is φ = 77770560.

The previous prime is 161381089. The next prime is 161381123. The reversal of 161381114 is 411183161.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 153636025 + 7745089 = 12395^2 + 2783^2 .

It is a super-3 number, since 3×161381114³ (a number of 26 digits) contains 333 as substring.

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, 35744 + ... + 40004.

Almost surely, 2^161381114 is an apocalyptic number.

161381114 is a deficient number, since it is larger than the sum of its proper divisors (89480206).

161381114 is a wasteful number, since it uses less digits than its factorization.

161381114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4945.

The product of its digits is 576, while the sum is 26.

The square root of 161381114 is about 12703.5866588928. The cubic root of 161381114 is about 544.4411003019.

The spelling of 161381114 in words is "one hundred sixty-one million, three hundred eighty-one thousand, one hundred fourteen".