861015954 has 16 divisors (see below), whose sum is σ = 1724701248. Its totient is φ = 286560432.

The previous prime is 861015943. The next prime is 861015977. The reversal of 861015954 is 459510168.

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, 107017 + ... + 114780.

It is an arithmetic number, because the mean of its divisors is an integer number (107793828).

Almost surely, 2^861015954 is an apocalyptic number.

861015954 is an abundant number, since it is smaller than the sum of its proper divisors (863685294).

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

861015954 is a wasteful number, since it uses less digits than its factorization.

861015954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222449.

The product of its (nonzero) digits is 43200, while the sum is 39.

The square root of 861015954 is about 29343.0733564158. The cubic root of 861015954 is about 951.3428669243.

The spelling of 861015954 in words is "eight hundred sixty-one million, fifteen thousand, nine hundred fifty-four".