1864725534 has 36 divisors (see below), whose sum is σ = 4618616184. Its totient is φ = 532640232.

The previous prime is 1864725451. The next prime is 1864725587. The reversal of 1864725534 is 4355274681.

It is a self number, because there is not a number n which added to its sum of digits gives 1864725534.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 482799 + ... + 486645.

It is an arithmetic number, because the mean of its divisors is an integer number (128294894).

Almost surely, 2^1864725534 is an apocalyptic number.

1864725534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1864725534 is an abundant number, since it is smaller than the sum of its proper divisors (2753890650).

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

1864725534 is an frugal number, since it uses more digits than its factorization.

1864725534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7709 (or 3859 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 1864725534 is about 43182.4679007581. The cubic root of 1864725534 is about 1230.8495538722.

The spelling of 1864725534 in words is "one billion, eight hundred sixty-four million, seven hundred twenty-five thousand, five hundred thirty-four".