1544076940 has 72 divisors (see below), whose sum is σ = 3874096800. Its totient is φ = 506356224.

The previous prime is 1544076929. The next prime is 1544076949. The reversal of 1544076940 is 496704451.

It is a junction number, because it is equal to n+sod(n) for n = 1544076893 and 1544076902.

It is not an unprimeable number, because it can be changed into a prime (1544076949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63636 + ... + 84484.

It is an arithmetic number, because the mean of its divisors is an integer number (53806900).

Almost surely, 2^1544076940 is an apocalyptic number.

1544076940 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 1544076940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1937048400).

1544076940 is an abundant number, since it is smaller than the sum of its proper divisors (2330019860).

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

1544076940 is a wasteful number, since it uses less digits than its factorization.

1544076940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20911 (or 20886 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1544076940 is about 39294.7444323029. The cubic root of 1544076940 is about 1155.8185111569.

The spelling of 1544076940 in words is "one billion, five hundred forty-four million, seventy-six thousand, nine hundred forty".