166157357 has 2 divisors, whose sum is σ = 166157358. Its totient is φ = 166157356.

The previous prime is 166157317. The next prime is 166157401. The reversal of 166157357 is 753751661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89226916 + 76930441 = 9446^2 + 8771^2 .

It is a cyclic number.

It is not a de Polignac number, because 166157357 - 2⁶ = 166157293 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166157317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83078678 + 83078679.

It is an arithmetic number, because the mean of its divisors is an integer number (83078679).

Almost surely, 2^166157357 is an apocalyptic number.

It is an amenable number.

166157357 is a deficient number, since it is larger than the sum of its proper divisors (1).

166157357 is an equidigital number, since it uses as much as digits as its factorization.

166157357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 132300, while the sum is 41.

The square root of 166157357 is about 12890.2039161528. The cubic root of 166157357 is about 549.7600683503.

The spelling of 166157357 in words is "one hundred sixty-six million, one hundred fifty-seven thousand, three hundred fifty-seven".