1540513996 has 48 divisors (see below), whose sum is σ = 3259872000. Its totient is φ = 622254528.

The previous prime is 1540513979. The next prime is 1540514009. The reversal of 1540513996 is 6993150451.

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, 97455 + ... + 112153.

It is an arithmetic number, because the mean of its divisors is an integer number (67914000).

Almost surely, 2^1540513996 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1540513996, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1629936000).

1540513996 is an abundant number, since it is smaller than the sum of its proper divisors (1719358004).

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

1540513996 is a wasteful number, since it uses less digits than its factorization.

1540513996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14926 (or 14924 counting only the distinct ones).

The product of its (nonzero) digits is 145800, while the sum is 43.

The square root of 1540513996 is about 39249.3821097861. The cubic root of 1540513996 is about 1154.9288127886.

The spelling of 1540513996 in words is "one billion, five hundred forty million, five hundred thirteen thousand, nine hundred ninety-six".