161741952 has 48 divisors (see below), whose sum is σ = 465432630. Its totient is φ = 53913600.

The previous prime is 161741947. The next prime is 161741977. The reversal of 161741952 is 259147161.

It can be written as a sum of positive squares in only one way, i.e., 161188416 + 553536 = 12696^2 + 744^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69049 + ... + 71352.

Almost surely, 2^161741952 is an apocalyptic number.

161741952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161741952 is an abundant number, since it is smaller than the sum of its proper divisors (303690678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161741952 is a wasteful number, since it uses less digits than its factorization.

161741952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140421 (or 140406 counting only the distinct ones).

The product of its digits is 15120, while the sum is 36.

The square root of 161741952 is about 12717.7809385128. The cubic root of 161741952 is about 544.8465769076.

The spelling of 161741952 in words is "one hundred sixty-one million, seven hundred forty-one thousand, nine hundred fifty-two".