161374239 has 48 divisors (see below), whose sum is σ = 266229600. Its totient is φ = 93374208.

The previous prime is 161374231. The next prime is 161374249. The reversal of 161374239 is 932473161.

161374239 is a `hidden beast` number, since 1 + 613 + 7 + 4 + 2 + 39 = 666.

161374239 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 161374239 - 2³ = 161374231 is a prime.

It is a super-3 number, since 3×161374239³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161374231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 508909 + ... + 509225.

It is an arithmetic number, because the mean of its divisors is an integer number (5546450).

Almost surely, 2^161374239 is an apocalyptic number.

161374239 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

161374239 is a deficient number, since it is larger than the sum of its proper divisors (104855361).

161374239 is a wasteful number, since it uses less digits than its factorization.

161374239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 581 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 161374239 is about 12703.3160631388. The cubic root of 161374239 is about 544.4333689434.

The spelling of 161374239 in words is "one hundred sixty-one million, three hundred seventy-four thousand, two hundred thirty-nine".