1540452163 has 4 divisors (see below), whose sum is σ = 1607428368. Its totient is φ = 1473475960.

The previous prime is 1540452157. The next prime is 1540452197. The reversal of 1540452163 is 3612540451.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1540452163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540452103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33488068 + ... + 33488113.

It is an arithmetic number, because the mean of its divisors is an integer number (401857092).

Almost surely, 2^1540452163 is an apocalyptic number.

1540452163 is a deficient number, since it is larger than the sum of its proper divisors (66976205).

1540452163 is an equidigital number, since it uses as much as digits as its factorization.

1540452163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66976204.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1540452163 is about 39248.5944079530. The cubic root of 1540452163 is about 1154.9133604420.

The spelling of 1540452163 in words is "one billion, five hundred forty million, four hundred fifty-two thousand, one hundred sixty-three".