858148540 has 24 divisors (see below), whose sum is σ = 1802877552. Its totient is φ = 343113600.

The previous prime is 858148531. The next prime is 858148567. The reversal of 858148540 is 45841858.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47815 + ... + 63265.

It is an arithmetic number, because the mean of its divisors is an integer number (75119898).

Almost surely, 2^858148540 is an apocalyptic number.

It is an amenable number.

858148540 is an abundant number, since it is smaller than the sum of its proper divisors (944729012).

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

858148540 is a wasteful number, since it uses less digits than its factorization.

858148540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18237 (or 18235 counting only the distinct ones).

The product of its (nonzero) digits is 204800, while the sum is 43.

The square root of 858148540 is about 29294.1724580163. The cubic root of 858148540 is about 950.2856167987.

It can be divided in two parts, 8581 and 48540, that added together give a square (57121 = 239²).

The spelling of 858148540 in words is "eight hundred fifty-eight million, one hundred forty-eight thousand, five hundred forty".