166051396 has 18 divisors (see below), whose sum is σ = 338033598. Its totient is φ = 71164800.

The previous prime is 166051387. The next prime is 166051397. The reversal of 166051396 is 693150661.

It can be written as a sum of positive squares in only one way, i.e., 118026496 + 48024900 = 10864^2 + 6930^2 .

It is a super-2 number, since 2×166051396² = 55146132227097632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (166051397) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 423405 + ... + 423796.

Almost surely, 2^166051396 is an apocalyptic number.

It is an amenable number.

166051396 is an abundant number, since it is smaller than the sum of its proper divisors (171982202).

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

166051396 is a wasteful number, since it uses less digits than its factorization.

166051396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847219 (or 847210 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 166051396 is about 12886.0931239845. The cubic root of 166051396 is about 549.6431801286.

The spelling of 166051396 in words is "one hundred sixty-six million, fifty-one thousand, three hundred ninety-six".