1861114628 has 12 divisors (see below), whose sum is σ = 3259425372. Its totient is φ = 929850240.

The previous prime is 1861114583. The next prime is 1861114631. The reversal of 1861114628 is 8264111681.

It can be written as a sum of positive squares in 2 ways, for example, as 1333126144 + 527988484 = 36512^2 + 22978^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1861114591 and 1861114600.

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 3 ways as a sum of consecutive naturals, for example, 170825 + ... + 181392.

It is an arithmetic number, because the mean of its divisors is an integer number (271618781).

Almost surely, 2^1861114628 is an apocalyptic number.

It is an amenable number.

1861114628 is a deficient number, since it is larger than the sum of its proper divisors (1398310744).

1861114628 is a wasteful number, since it uses less digits than its factorization.

1861114628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353542 (or 353540 counting only the distinct ones).

The product of its digits is 18432, while the sum is 38.

The square root of 1861114628 is about 43140.6377792448. The cubic root of 1861114628 is about 1230.0545568151.

The spelling of 1861114628 in words is "one billion, eight hundred sixty-one million, one hundred fourteen thousand, six hundred twenty-eight".