1860012421 has 8 divisors (see below), whose sum is σ = 1878945624. Its totient is φ = 1841157120.

The previous prime is 1860012403. The next prime is 1860012443. The reversal of 1860012421 is 1242100681.

It can be written as a sum of positive squares in 4 ways, for example, as 81703521 + 1778308900 = 9039^2 + 42170^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1860012421 - 2⁵ = 1860012389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1860012491) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 29131 + ... + 67591.

It is an arithmetic number, because the mean of its divisors is an integer number (234868203).

Almost surely, 2^1860012421 is an apocalyptic number.

It is an amenable number.

1860012421 is a deficient number, since it is larger than the sum of its proper divisors (18933203).

1860012421 is a wasteful number, since it uses less digits than its factorization.

1860012421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38951.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 1860012421 is about 43127.8613079758. The cubic root of 1860012421 is about 1229.8116839951.

The spelling of 1860012421 in words is "one billion, eight hundred sixty million, twelve thousand, four hundred twenty-one".