1601613077 has 2 divisors, whose sum is σ = 1601613078. Its totient is φ = 1601613076.

The previous prime is 1601612953. The next prime is 1601613089. The reversal of 1601613077 is 7703161061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1462986001 + 138627076 = 38249^2 + 11774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1601613077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1601603077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800806538 + 800806539.

It is an arithmetic number, because the mean of its divisors is an integer number (800806539).

Almost surely, 2^1601613077 is an apocalyptic number.

It is an amenable number.

1601613077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601613077 is an equidigital number, since it uses as much as digits as its factorization.

1601613077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 1601613077 is about 40020.1583829949. The cubic root of 1601613077 is about 1170.0000187498. Note that the first 4 decimals are identical.

The spelling of 1601613077 in words is "one billion, six hundred one million, six hundred thirteen thousand, seventy-seven".