1540673265 has 16 divisors (see below), whose sum is σ = 2466770688. Its totient is φ = 821127936.

The previous prime is 1540673243. The next prime is 1540673287. The reversal of 1540673265 is 5623760451.

It is an interprime number because it is at equal distance from previous prime (1540673243) and next prime (1540673287).

It is not a de Polignac number, because 1540673265 - 2⁶ = 1540673201 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 12232 + ... + 56841.

It is an arithmetic number, because the mean of its divisors is an integer number (154173168).

Almost surely, 2^1540673265 is an apocalyptic number.

1540673265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1540673265 is a deficient number, since it is larger than the sum of its proper divisors (926097423).

1540673265 is a wasteful number, since it uses less digits than its factorization.

1540673265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70568.

The product of its (nonzero) digits is 151200, while the sum is 39.

The square root of 1540673265 is about 39251.4109937465. The cubic root of 1540673265 is about 1154.9686129287.

The spelling of 1540673265 in words is "one billion, five hundred forty million, six hundred seventy-three thousand, two hundred sixty-five".