363691481 has 2 divisors, whose sum is σ = 363691482. Its totient is φ = 363691480.

The previous prime is 363691453. The next prime is 363691487. The reversal of 363691481 is 184196363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231648400 + 132043081 = 15220^2 + 11491^2 .

It is a cyclic number.

It is not a de Polignac number, because 363691481 - 2¹⁴ = 363675097 is a prime.

It is a super-2 number, since 2×363691481² = 264542986703946722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (363691487) 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, 181845740 + 181845741.

It is an arithmetic number, because the mean of its divisors is an integer number (181845741).

Almost surely, 2^363691481 is an apocalyptic number.

It is an amenable number.

363691481 is a deficient number, since it is larger than the sum of its proper divisors (1).

363691481 is an equidigital number, since it uses as much as digits as its factorization.

363691481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 41.

The square root of 363691481 is about 19070.6969196199. The cubic root of 363691481 is about 713.8019161663.

The spelling of 363691481 in words is "three hundred sixty-three million, six hundred ninety-one thousand, four hundred eighty-one".