1545312040 has 32 divisors (see below), whose sum is σ = 3628126080. Its totient is φ = 591249472.

The previous prime is 1545312037. The next prime is 1545312071. The reversal of 1545312040 is 402135451.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1545311996 and 1545312014.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 838924 + ... + 840763.

It is an arithmetic number, because the mean of its divisors is an integer number (113378940).

Almost surely, 2^1545312040 is an apocalyptic number.

1545312040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1545312040 is an abundant number, since it is smaller than the sum of its proper divisors (2082814040).

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

1545312040 is a wasteful number, since it uses less digits than its factorization.

1545312040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679721 (or 1679717 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1545312040 is about 39310.4571329309. The cubic root of 1545312040 is about 1156.1266069831.

Adding to 1545312040 its reverse (402135451), we get a palindrome (1947447491).

The spelling of 1545312040 in words is "one billion, five hundred forty-five million, three hundred twelve thousand, forty".