1966159418 has 8 divisors (see below), whose sum is σ = 2955247200. Its totient is φ = 981077020.

The previous prime is 1966159409. The next prime is 1966159427. The reversal of 1966159418 is 8149516691.

It is an interprime number because it is at equal distance from previous prime (1966159409) and next prime (1966159427).

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1000118 + ... + 1002081.

It is an arithmetic number, because the mean of its divisors is an integer number (369405900).

Almost surely, 2^1966159418 is an apocalyptic number.

1966159418 is a deficient number, since it is larger than the sum of its proper divisors (989087782).

1966159418 is a wasteful number, since it uses less digits than its factorization.

1966159418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2002692.

The product of its digits is 466560, while the sum is 50.

The square root of 1966159418 is about 44341.3962116666. The cubic root of 1966159418 is about 1252.7745129460.

The spelling of 1966159418 in words is "one billion, nine hundred sixty-six million, one hundred fifty-nine thousand, four hundred eighteen".