146187857 has 4 divisors (see below), whose sum is σ = 147529140. Its totient is φ = 144846576.

The previous prime is 146187823. The next prime is 146187859. The reversal of 146187857 is 758781641.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57093136 + 89094721 = 7556^2 + 9439^2 .

It is a cyclic number.

It is not a de Polignac number, because 146187857 - 2¹⁸ = 145925713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (146187859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670478 + ... + 670695.

It is an arithmetic number, because the mean of its divisors is an integer number (36882285).

Almost surely, 2^146187857 is an apocalyptic number.

It is an amenable number.

146187857 is a deficient number, since it is larger than the sum of its proper divisors (1341283).

146187857 is a wasteful number, since it uses less digits than its factorization.

146187857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1341282.

The product of its digits is 376320, while the sum is 47.

The square root of 146187857 is about 12090.8170526230. The cubic root of 146187857 is about 526.7894877701.

The spelling of 146187857 in words is "one hundred forty-six million, one hundred eighty-seven thousand, eight hundred fifty-seven".