1203664541 has 2 divisors, whose sum is σ = 1203664542. Its totient is φ = 1203664540.

The previous prime is 1203664537. The next prime is 1203664591. The reversal of 1203664541 is 1454663021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1065696025 + 137968516 = 32645^2 + 11746^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203664541 - 2² = 1203664537 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1203664498 and 1203664507.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1203664531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601832270 + 601832271.

It is an arithmetic number, because the mean of its divisors is an integer number (601832271).

Almost surely, 2^1203664541 is an apocalyptic number.

It is an amenable number.

1203664541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1203664541 is an equidigital number, since it uses as much as digits as its factorization.

1203664541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1203664541 is about 34693.8689252150. The cubic root of 1203664541 is about 1063.7391799150.

The spelling of 1203664541 in words is "one billion, two hundred three million, six hundred sixty-four thousand, five hundred forty-one".