1549649712 has 80 divisors (see below), whose sum is σ = 4322223360. Its totient is φ = 475597056.

The previous prime is 1549649687. The next prime is 1549649723. The reversal of 1549649712 is 2179469451.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258493 + ... + 264419.

It is an arithmetic number, because the mean of its divisors is an integer number (54027792).

Almost surely, 2^1549649712 is an apocalyptic number.

1549649712 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 1549649712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2161111680).

1549649712 is an abundant number, since it is smaller than the sum of its proper divisors (2772573648).

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

1549649712 is a wasteful number, since it uses less digits than its factorization.

1549649712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6370 (or 6364 counting only the distinct ones).

The product of its digits is 544320, while the sum is 48.

The square root of 1549649712 is about 39365.5904566412. The cubic root of 1549649712 is about 1157.2073408270.

The spelling of 1549649712 in words is "one billion, five hundred forty-nine million, six hundred forty-nine thousand, seven hundred twelve".