1383967553 has 2 divisors, whose sum is σ = 1383967554. Its totient is φ = 1383967552.

The previous prime is 1383967489. The next prime is 1383967597. The reversal of 1383967553 is 3557693831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 981443584 + 402523969 = 31328^2 + 20063^2 .

It is an emirp because it is prime and its reverse (3557693831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1383967553 - 2⁶ = 1383967489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1383967253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 691983776 + 691983777.

It is an arithmetic number, because the mean of its divisors is an integer number (691983777).

Almost surely, 2^1383967553 is an apocalyptic number.

It is an amenable number.

1383967553 is a deficient number, since it is larger than the sum of its proper divisors (1).

1383967553 is an equidigital number, since it uses as much as digits as its factorization.

1383967553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2041200, while the sum is 50.

The square root of 1383967553 is about 37201.7143825389. The cubic root of 1383967553 is about 1114.4022221552.

The spelling of 1383967553 in words is "one billion, three hundred eighty-three million, nine hundred sixty-seven thousand, five hundred fifty-three".