609101857 has 48 divisors (see below), whose sum is σ = 824712192. Its totient is φ = 438497280.

The previous prime is 609101851. The next prime is 609101921. The reversal of 609101857 is 758101906.

It is not a de Polignac number, because 609101857 - 2¹⁹ = 608577569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (609101851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 622953 + ... + 623929.

It is an arithmetic number, because the mean of its divisors is an integer number (17181504).

Almost surely, 2^609101857 is an apocalyptic number.

It is an amenable number.

609101857 is a deficient number, since it is larger than the sum of its proper divisors (215610335).

609101857 is a wasteful number, since it uses less digits than its factorization.

609101857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058 (or 1045 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 37.

The square root of 609101857 is about 24679.9889991872. The cubic root of 609101857 is about 847.6761702784.

The spelling of 609101857 in words is "six hundred nine million, one hundred one thousand, eight hundred fifty-seven".