1949166864 has 60 divisors (see below), whose sum is σ = 5461920256. Its totient is φ = 648893376.

The previous prime is 1949166847. The next prime is 1949166883. The reversal of 1949166864 is 4686619491.

It is a happy number.

1949166864 is a `hidden beast` number, since 19 + 491 + 66 + 86 + 4 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 1949166864.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110289 + ... + 126735.

Almost surely, 2^1949166864 is an apocalyptic number.

It is an amenable number.

1949166864 is an abundant number, since it is smaller than the sum of its proper divisors (3512753392).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1949166864 is a wasteful number, since it uses less digits than its factorization.

1949166864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17284 (or 17275 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 1949166864 is about 44149.3699162287. The cubic root of 1949166864 is about 1249.1550265980.

Subtracting from 1949166864 its product of digits (2239488), we obtain a square (1946927376 = 44124²).

The spelling of 1949166864 in words is "one billion, nine hundred forty-nine million, one hundred sixty-six thousand, eight hundred sixty-four".