1203621413 has 2 divisors, whose sum is σ = 1203621414. Its totient is φ = 1203621412.

The previous prime is 1203621409. The next prime is 1203621427. The reversal of 1203621413 is 3141263021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 959574529 + 244046884 = 30977^2 + 15622^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203621413 - 2² = 1203621409 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203621473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601810706 + 601810707.

It is an arithmetic number, because the mean of its divisors is an integer number (601810707).

Almost surely, 2^1203621413 is an apocalyptic number.

It is an amenable number.

1203621413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203621413 is an equidigital number, since it uses as much as digits as its factorization.

1203621413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1203621413 is about 34693.2473689045. The cubic root of 1203621413 is about 1063.7264749656.

Adding to 1203621413 its reverse (3141263021), we get a palindrome (4344884434).

The spelling of 1203621413 in words is "one billion, two hundred three million, six hundred twenty-one thousand, four hundred thirteen".