1611383357 has 2 divisors, whose sum is σ = 1611383358. Its totient is φ = 1611383356.

The previous prime is 1611383341. The next prime is 1611383387. The reversal of 1611383357 is 7533831161.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1611139321 + 244036 = 40139^2 + 494^2 .

It is a cyclic number.

It is not a de Polignac number, because 1611383357 - 2⁴ = 1611383341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1611383357.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1611383387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805691678 + 805691679.

It is an arithmetic number, because the mean of its divisors is an integer number (805691679).

Almost surely, 2^1611383357 is an apocalyptic number.

It is an amenable number.

1611383357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1611383357 is an equidigital number, since it uses as much as digits as its factorization.

1611383357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 1611383357 is about 40142.0397712921. The cubic root of 1611383357 is about 1172.3743045789.

The spelling of 1611383357 in words is "one billion, six hundred eleven million, three hundred eighty-three thousand, three hundred fifty-seven".