149010857 has 2 divisors, whose sum is σ = 149010858. Its totient is φ = 149010856.

The previous prime is 149010847. The next prime is 149010907. The reversal of 149010857 is 758010941.

149010857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148449856 + 561001 = 12184^2 + 749^2 .

It is an emirp because it is prime and its reverse (758010941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149010857 - 2⁸ = 149010601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (149010817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74505428 + 74505429.

It is an arithmetic number, because the mean of its divisors is an integer number (74505429).

Almost surely, 2^149010857 is an apocalyptic number.

It is an amenable number.

149010857 is a deficient number, since it is larger than the sum of its proper divisors (1).

149010857 is an equidigital number, since it uses as much as digits as its factorization.

149010857 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 149010857 is about 12207.0003276808. Note that the first 3 decimals coincide. The cubic root of 149010857 is about 530.1587954225.

The spelling of 149010857 in words is "one hundred forty-nine million, ten thousand, eight hundred fifty-seven".