1549031040 has 160 divisors (see below), whose sum is σ = 5532054660. Its totient is φ = 413061120.

The previous prime is 1549031039. The next prime is 1549031051. The reversal of 1549031040 is 401309451.

It can be written as a sum of positive squares in 2 ways, for example, as 1417974336 + 131056704 = 37656^2 + 11448^2 .

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1549030995 and 1549031013.

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, 36900 + ... + 66780.

Almost surely, 2^1549031040 is an apocalyptic number.

1549031040 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 1549031040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2766027330).

1549031040 is an abundant number, since it is smaller than the sum of its proper divisors (3983023620).

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

1549031040 is an equidigital number, since it uses as much as digits as its factorization.

1549031040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29912 (or 29891 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1549031040 is about 39357.7316419531. The cubic root of 1549031040 is about 1157.0533217025.

The spelling of 1549031040 in words is "one billion, five hundred forty-nine million, thirty-one thousand, forty".