1949405164 has 48 divisors (see below), whose sum is σ = 4136251392. Its totient is φ = 784772352.

The previous prime is 1949405119. The next prime is 1949405179. The reversal of 1949405164 is 4615049491.

It is a self number, because there is not a number n which added to its sum of digits gives 1949405164.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256629 + ... + 264115.

It is an arithmetic number, because the mean of its divisors is an integer number (86171904).

Almost surely, 2^1949405164 is an apocalyptic number.

1949405164 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1949405164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2068125696).

1949405164 is an abundant number, since it is smaller than the sum of its proper divisors (2186846228).

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

1949405164 is a wasteful number, since it uses less digits than its factorization.

1949405164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8062 (or 8060 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 1949405164 is about 44152.0686265094. The cubic root of 1949405164 is about 1249.2059306566.

The spelling of 1949405164 in words is "one billion, nine hundred forty-nine million, four hundred five thousand, one hundred sixty-four".