1540079855 has 8 divisors (see below), whose sum is σ = 1849100064. Its totient is φ = 1231394400.

The previous prime is 1540079831. The next prime is 1540079917. The reversal of 1540079855 is 5589700451.

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

It is not a de Polignac number, because 1540079855 - 2¹⁸ = 1539817711 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73451 + ... + 92060.

It is an arithmetic number, because the mean of its divisors is an integer number (231137508).

Almost surely, 2^1540079855 is an apocalyptic number.

1540079855 is a deficient number, since it is larger than the sum of its proper divisors (309020209).

1540079855 is a wasteful number, since it uses less digits than its factorization.

1540079855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167377.

The product of its (nonzero) digits is 252000, while the sum is 44.

The square root of 1540079855 is about 39243.8511744197. The cubic root of 1540079855 is about 1154.8203102457.

The spelling of 1540079855 in words is "one billion, five hundred forty million, seventy-nine thousand, eight hundred fifty-five".