1540729368 has 24 divisors (see below), whose sum is σ = 4172808900. Its totient is φ = 513576432.

The previous prime is 1540729367. The next prime is 1540729373. The reversal of 1540729368 is 8639270451.

1540729368 is a `hidden beast` number, since 1 + 540 + 72 + 9 + 36 + 8 = 666.

1540729368 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (24).

1540729368 is strictly pandigital in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540729367) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10699438 + ... + 10699581.

It is a 1-persistent number, because it is pandigital, but 2⋅1540729368 = 3081458736 is not.

Almost surely, 2^1540729368 is an apocalyptic number.

1540729368 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1540729368 is an abundant number, since it is smaller than the sum of its proper divisors (2632079532).

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

1540729368 is a wasteful number, since it uses less digits than its factorization.

1540729368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21399031 (or 21399024 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1540729368 is about 39252.1256494473. The cubic root of 1540729368 is about 1154.9826319984.

The spelling of 1540729368 in words is "one billion, five hundred forty million, seven hundred twenty-nine thousand, three hundred sixty-eight".