161148878 has 8 divisors (see below), whose sum is σ = 263698200. Its totient is φ = 73249480.

The previous prime is 161148877. The next prime is 161148893. The reversal of 161148878 is 878841161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161148877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3662453 + ... + 3662496.

It is an arithmetic number, because the mean of its divisors is an integer number (32962275).

Almost surely, 2^161148878 is an apocalyptic number.

161148878 is a deficient number, since it is larger than the sum of its proper divisors (102549322).

161148878 is a wasteful number, since it uses less digits than its factorization.

161148878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7324962.

The product of its digits is 86016, while the sum is 44.

The square root of 161148878 is about 12694.4427999026. The cubic root of 161148878 is about 544.1798150343.

The spelling of 161148878 in words is "one hundred sixty-one million, one hundred forty-eight thousand, eight hundred seventy-eight".