381651799357 has 2 divisors, whose sum is σ = 381651799358. Its totient is φ = 381651799356.

The previous prime is 381651799283. The next prime is 381651799367. The reversal of 381651799357 is 753997156183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218064716676 + 163587082681 = 466974^2 + 404459^2 .

It is a cyclic number.

It is not a de Polignac number, because 381651799357 - 2¹⁹ = 381651275069 is a prime.

It is a super-2 number, since 2×381651799357² (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 (381651799367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190825899678 + 190825899679.

It is an arithmetic number, because the mean of its divisors is an integer number (190825899679).

Almost surely, 2^381651799357 is an apocalyptic number.

It is an amenable number.

381651799357 is a deficient number, since it is larger than the sum of its proper divisors (1).

381651799357 is an equidigital number, since it uses as much as digits as its factorization.

381651799357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42865200, while the sum is 64.

The spelling of 381651799357 in words is "three hundred eighty-one billion, six hundred fifty-one million, seven hundred ninety-nine thousand, three hundred fifty-seven".