2861394064 has 45 divisors (see below), whose sum is σ = 5694187539. Its totient is φ = 1392931680.

The previous prime is 2861394061. The next prime is 2861394077. The reversal of 2861394064 is 4604931682.

It is a happy number.

The square root of 2861394064 is 53492.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2861394064.

It is not an unprimeable number, because it can be changed into a prime (2861394061) 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 8 ways as a sum of consecutive naturals, for example, 9200469 + ... + 9200779.

Almost surely, 2^2861394064 is an apocalyptic number.

2861394064 is the 53492-nd square number.

It is an amenable number.

2861394064 is a deficient number, since it is larger than the sum of its proper divisors (2832793475).

2861394064 is an frugal number, since it uses more digits than its factorization.

2861394064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 716 (or 356 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The cubic root of 2861394064 is about 1419.6868422704.

The spelling of 2861394064 in words is "two billion, eight hundred sixty-one million, three hundred ninety-four thousand, sixty-four".