1540450471 has 8 divisors (see below), whose sum is σ = 1766141984. Its totient is φ = 1316165760.

The previous prime is 1540450469. The next prime is 1540450477. The reversal of 1540450471 is 1740540451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1540450471 - 2¹ = 1540450469 is a prime.

It is a super-3 number, since 3×1540450471³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540450477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349350 + ... + 353731.

It is an arithmetic number, because the mean of its divisors is an integer number (220767748).

Almost surely, 2^1540450471 is an apocalyptic number.

1540450471 is a deficient number, since it is larger than the sum of its proper divisors (225691513).

1540450471 is an equidigital number, since it uses as much as digits as its factorization.

1540450471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703401.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 1540450471 is about 39248.5728530351. The cubic root of 1540450471 is about 1154.9129375977.

The spelling of 1540450471 in words is "one billion, five hundred forty million, four hundred fifty thousand, four hundred seventy-one".