1545263240 has 32 divisors (see below), whose sum is σ = 3484491480. Its totient is φ = 616745472.

The previous prime is 1545263233. The next prime is 1545263249. The reversal of 1545263240 is 423625451.

It can be written as a sum of positive squares in 4 ways, for example, as 1217870404 + 327392836 = 34898^2 + 18094^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1545263197 and 1545263206.

It is not an unprimeable number, because it can be changed into a prime (1545263249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23987 + ... + 60546.

Almost surely, 2^1545263240 is an apocalyptic number.

1545263240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1545263240 is an abundant number, since it is smaller than the sum of its proper divisors (1939228240).

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

1545263240 is a wasteful number, since it uses less digits than its factorization.

1545263240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85001 (or 84997 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 1545263240 is about 39309.8364280494. The cubic root of 1545263240 is about 1156.1144369336.

Adding to 1545263240 its reverse (423625451), we get a palindrome (1968888691).

The spelling of 1545263240 in words is "one billion, five hundred forty-five million, two hundred sixty-three thousand, two hundred forty".