1861006336 has 44 divisors (see below), whose sum is σ = 4251668128. Its totient is φ = 797571072.

The previous prime is 1861006321. The next prime is 1861006339. The reversal of 1861006336 is 6336001681.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1861006339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122646 + ... + 136981.

Almost surely, 2^1861006336 is an apocalyptic number.

1861006336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1861006336 is an abundant number, since it is smaller than the sum of its proper divisors (2390661792).

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

1861006336 is an equidigital number, since it uses as much as digits as its factorization.

1861006336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259654 (or 259636 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1861006336 is about 43139.3826566862. The cubic root of 1861006336 is about 1230.0306987733.

The spelling of 1861006336 in words is "one billion, eight hundred sixty-one million, six thousand, three hundred thirty-six".