1865949083806 has 16 divisors (see below), whose sum is σ = 2824685463600. Its totient is φ = 924387769728.

The previous prime is 1865949083771. The next prime is 1865949083939. The reversal of 1865949083806 is 6083809495681.

It is a super-2 number, since 2×1865949083806² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8640150 + ... + 8853478.

It is an arithmetic number, because the mean of its divisors is an integer number (176542841475).

Almost surely, 2^{1865949083806} is an apocalyptic number.

1865949083806 is a deficient number, since it is larger than the sum of its proper divisors (958736379794).

1865949083806 is a wasteful number, since it uses less digits than its factorization.

1865949083806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253563.

The product of its (nonzero) digits is 89579520, while the sum is 67.

The spelling of 1865949083806 in words is "one trillion, eight hundred sixty-five billion, nine hundred forty-nine million, eighty-three thousand, eight hundred six".