1949619456 has 180 divisors, whose sum is σ = 5858610912. Its totient is φ = 644834304.

The previous prime is 1949619443. The next prime is 1949619467. The reversal of 1949619456 is 6549169491.

1949619456 is a `hidden beast` number, since 1 + 94 + 96 + 19 + 456 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3462631 + ... + 3463193.

Almost surely, 2^1949619456 is an apocalyptic number.

1949619456 is a gapful number since it is divisible by the number (16) 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 1949619456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2929305456).

1949619456 is an abundant number, since it is smaller than the sum of its proper divisors (3908991456).

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

1949619456 is an equidigital number, since it uses as much as digits as its factorization.

1949619456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758 (or 735 counting only the distinct ones).

The product of its digits is 2099520, while the sum is 54.

The square root of 1949619456 is about 44154.4953090849. The cubic root of 1949619456 is about 1249.2517027437.

The spelling of 1949619456 in words is "one billion, nine hundred forty-nine million, six hundred nineteen thousand, four hundred fifty-six".