1523040413 has 4 divisors (see below), whose sum is σ = 1523158140. Its totient is φ = 1522922688.

The previous prime is 1523040373. The next prime is 1523040433. The reversal of 1523040413 is 3140403251.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1131515044 + 391525369 = 33638^2 + 19787^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1523040413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1523040433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36668 + ... + 66261.

It is an arithmetic number, because the mean of its divisors is an integer number (380789535).

Almost surely, 2^1523040413 is an apocalyptic number.

It is an amenable number.

1523040413 is a deficient number, since it is larger than the sum of its proper divisors (117727).

1523040413 is a wasteful number, since it uses less digits than its factorization.

1523040413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117726.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1523040413 is about 39026.1503738199. The cubic root of 1523040413 is about 1150.5455289506.

Adding to 1523040413 its reverse (3140403251), we get a palindrome (4663443664).

The spelling of 1523040413 in words is "one billion, five hundred twenty-three million, forty thousand, four hundred thirteen".