1966940086 has 16 divisors (see below), whose sum is σ = 3124968336. Its totient is φ = 925321216.

The previous prime is 1966940033. The next prime is 1966940089. The reversal of 1966940086 is 6800496691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1966940089) 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, 126870 + ... + 141526.

It is an arithmetic number, because the mean of its divisors is an integer number (195310521).

Almost surely, 2^1966940086 is an apocalyptic number.

1966940086 is a deficient number, since it is larger than the sum of its proper divisors (1158028250).

1966940086 is a wasteful number, since it uses less digits than its factorization.

1966940086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18623.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 1966940086 is about 44350.1982633674. The cubic root of 1966940086 is about 1252.9402966483.

The spelling of 1966940086 in words is "one billion, nine hundred sixty-six million, nine hundred forty thousand, eighty-six".