161860402 has 16 divisors (see below), whose sum is σ = 265060512. Its totient is φ = 73517920.

The previous prime is 161860367. The next prime is 161860403. The reversal of 161860402 is 204068161.

161860402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161860403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48933 + ... + 52135.

It is an arithmetic number, because the mean of its divisors is an integer number (16566282).

Almost surely, 2^161860402 is an apocalyptic number.

161860402 is a deficient number, since it is larger than the sum of its proper divisors (103200110).

161860402 is a wasteful number, since it uses less digits than its factorization.

161860402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5513.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 161860402 is about 12722.4369520937. The cubic root of 161860402 is about 544.9795486532.

The spelling of 161860402 in words is "one hundred sixty-one million, eight hundred sixty thousand, four hundred two".