1861000966 has 16 divisors (see below), whose sum is σ = 3051494208. Its totient is φ = 844181800.

The previous prime is 1861000937. The next prime is 1861000979. The reversal of 1861000966 is 6690001681.

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, 75340 + ... + 96943.

It is an arithmetic number, because the mean of its divisors is an integer number (190718388).

Almost surely, 2^1861000966 is an apocalyptic number.

1861000966 is a deficient number, since it is larger than the sum of its proper divisors (1190493242).

1861000966 is a wasteful number, since it uses less digits than its factorization.

1861000966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172787.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1861000966 is about 43139.3204165295. The cubic root of 1861000966 is about 1230.0295156731.

The spelling of 1861000966 in words is "one billion, eight hundred sixty-one million, nine hundred sixty-six", and thus it is an aban number.