1861430746 has 16 divisors (see below), whose sum is σ = 3194683776. Its totient is φ = 796841136.

The previous prime is 1861430731. The next prime is 1861430749. The reversal of 1861430746 is 6470341681.

It is a junction number, because it is equal to n+sod(n) for n = 1861430699 and 1861430708.

It is not an unprimeable number, because it can be changed into a prime (1861430749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63526 + ... + 88081.

It is an arithmetic number, because the mean of its divisors is an integer number (199667736).

Almost surely, 2^1861430746 is an apocalyptic number.

1861430746 is a deficient number, since it is larger than the sum of its proper divisors (1333253030).

1861430746 is a wasteful number, since it uses less digits than its factorization.

1861430746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152493.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 1861430746 is about 43144.3014313594. The cubic root of 1861430746 is about 1230.1241961533.

The spelling of 1861430746 in words is "one billion, eight hundred sixty-one million, four hundred thirty thousand, seven hundred forty-six".