1949228544 has 80 divisors (see below), whose sum is σ = 5466257280. Its totient is φ = 615536640.

The previous prime is 1949228543. The next prime is 1949228549. The reversal of 1949228544 is 4458229491.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 1949228493 and 1949228502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949228543) 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, 4212 + ... + 62579.

It is an arithmetic number, because the mean of its divisors is an integer number (68328216).

Almost surely, 2^1949228544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1949228544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2733128640).

1949228544 is an abundant number, since it is smaller than the sum of its proper divisors (3517028736).

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

1949228544 is an equidigital number, since it uses as much as digits as its factorization.

1949228544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66831 (or 66815 counting only the distinct ones).

The product of its digits is 829440, while the sum is 48.

The square root of 1949228544 is about 44150.0684484181. The cubic root of 1949228544 is about 1249.1682026667.

The spelling of 1949228544 in words is "one billion, nine hundred forty-nine million, two hundred twenty-eight thousand, five hundred forty-four".