166202402 has 4 divisors (see below), whose sum is σ = 249303606. Its totient is φ = 83101200.

The previous prime is 166202401. The next prime is 166202423. The reversal of 166202402 is 204202661.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 157728481 + 8473921 = 12559^2 + 2911^2 .

It is not an unprimeable number, because it can be changed into a prime (166202401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41550599 + ... + 41550602.

Almost surely, 2^166202402 is an apocalyptic number.

166202402 is a deficient number, since it is larger than the sum of its proper divisors (83101204).

166202402 is an equidigital number, since it uses as much as digits as its factorization.

166202402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83101203.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 166202402 is about 12891.9510548249. The cubic root of 166202402 is about 549.8097435603.

The spelling of 166202402 in words is "one hundred sixty-six million, two hundred two thousand, four hundred two".