1649111472 has 60 divisors (see below), whose sum is σ = 4634628960. Its totient is φ = 547392384.

The previous prime is 1649111461. The next prime is 1649111509. The reversal of 1649111472 is 2741119461.

1649111472 is a `hidden beast` number, since 1 + 649 + 1 + 1 + 1 + 4 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 10458 + ... + 58374.

It is an arithmetic number, because the mean of its divisors is an integer number (77243816).

Almost surely, 2^1649111472 is an apocalyptic number.

1649111472 is a gapful number since it is divisible by the number (12) 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 1649111472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2317314480).

1649111472 is an abundant number, since it is smaller than the sum of its proper divisors (2985517488).

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

1649111472 is a wasteful number, since it uses less digits than its factorization.

1649111472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48170 (or 48161 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 1649111472 is about 40609.2535267518. The cubic root of 1649111472 is about 1181.4536026639.

The spelling of 1649111472 in words is "one billion, six hundred forty-nine million, one hundred eleven thousand, four hundred seventy-two".