161776148 has 48 divisors (see below), whose sum is σ = 312105024. Its totient is φ = 73059840.

The previous prime is 161776093. The next prime is 161776151. The reversal of 161776148 is 841677161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177911 + ... + 178817.

It is an arithmetic number, because the mean of its divisors is an integer number (6502188).

Almost surely, 2^161776148 is an apocalyptic number.

It is an amenable number.

161776148 is a deficient number, since it is larger than the sum of its proper divisors (150328876).

161776148 is a wasteful number, since it uses less digits than its factorization.

161776148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032 (or 1030 counting only the distinct ones).

The product of its digits is 56448, while the sum is 41.

The square root of 161776148 is about 12719.1252843896. The cubic root of 161776148 is about 544.8849719362.

The spelling of 161776148 in words is "one hundred sixty-one million, seven hundred seventy-six thousand, one hundred forty-eight".