1253620413 has 12 divisors (see below), whose sum is σ = 1813174428. Its totient is φ = 834644160.

The previous prime is 1253620393. The next prime is 1253620483. The reversal of 1253620413 is 3140263521.

1253620413 is a `hidden beast` number, since 1 + 25 + 3 + 620 + 4 + 13 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1734489 + 1251885924 = 1317^2 + 35382^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1253620413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253620483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84670 + ... + 98367.

It is an arithmetic number, because the mean of its divisors is an integer number (151097869).

Almost surely, 2^1253620413 is an apocalyptic number.

It is an amenable number.

1253620413 is a deficient number, since it is larger than the sum of its proper divisors (559554015).

1253620413 is a wasteful number, since it uses less digits than its factorization.

1253620413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183804 (or 183801 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1253620413 is about 35406.5024112803. The cubic root of 1253620413 is about 1078.2563350224.

Adding to 1253620413 its reverse (3140263521), we get a palindrome (4393883934).

The spelling of 1253620413 in words is "one billion, two hundred fifty-three million, six hundred twenty thousand, four hundred thirteen".