1913380577 has 4 divisors (see below), whose sum is σ = 1923294660. Its totient is φ = 1903466496.

The previous prime is 1913380571. The next prime is 1913380597. The reversal of 1913380577 is 7750833191.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1299530401 + 613850176 = 36049^2 + 24776^2 .

It is a cyclic number.

It is not a de Polignac number, because 1913380577 - 2⁸ = 1913380321 is a prime.

It is a super-2 number, since 2×1913380577² = 7322050464881705858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1913380571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4956752 + ... + 4957137.

It is an arithmetic number, because the mean of its divisors is an integer number (480823665).

Almost surely, 2^1913380577 is an apocalyptic number.

It is an amenable number.

1913380577 is a deficient number, since it is larger than the sum of its proper divisors (9914083).

1913380577 is an equidigital number, since it uses as much as digits as its factorization.

1913380577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9914082.

The product of its (nonzero) digits is 158760, while the sum is 44.

The square root of 1913380577 is about 43742.2059000229. The cubic root of 1913380577 is about 1241.4630184476.

The spelling of 1913380577 in words is "one billion, nine hundred thirteen million, three hundred eighty thousand, five hundred seventy-seven".