1549874040 has 256 divisors, whose sum is σ = 5503680000. Its totient is φ = 344217600.

The previous prime is 1549874033. The next prime is 1549874059. The reversal of 1549874040 is 404789451.

It is a junction number, because it is equal to n+sod(n) for n = 1549873983 and 1549874001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3105711 + ... + 3106209.

It is an arithmetic number, because the mean of its divisors is an integer number (21498750).

Almost surely, 2^1549874040 is an apocalyptic number.

1549874040 is a gapful number since it is divisible by the number (10) 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 1549874040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2751840000).

1549874040 is an abundant number, since it is smaller than the sum of its proper divisors (3953805960).

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

1549874040 is a wasteful number, since it uses less digits than its factorization.

1549874040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 1549874040 is about 39368.4396439585. The cubic root of 1549874040 is about 1157.2631774205.

The spelling of 1549874040 in words is "one billion, five hundred forty-nine million, eight hundred seventy-four thousand, forty".