380915687693 has 2 divisors, whose sum is σ = 380915687694. Its totient is φ = 380915687692.

The previous prime is 380915687641. The next prime is 380915687707. The reversal of 380915687693 is 396786519083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 301113392644 + 79802295049 = 548738^2 + 282493^2 .

It is a cyclic number.

It is not a de Polignac number, because 380915687693 - 2⁶ = 380915687629 is a prime.

It is a super-2 number, since 2×380915687693² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380915683693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190457843846 + 190457843847.

It is an arithmetic number, because the mean of its divisors is an integer number (190457843847).

Almost surely, 2^380915687693 is an apocalyptic number.

It is an amenable number.

380915687693 is a deficient number, since it is larger than the sum of its proper divisors (1).

380915687693 is an equidigital number, since it uses as much as digits as its factorization.

380915687693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58786560, while the sum is 65.

The spelling of 380915687693 in words is "three hundred eighty billion, nine hundred fifteen million, six hundred eighty-seven thousand, six hundred ninety-three".