381498669 has 6 divisors (see below), whose sum is σ = 551053646. Its totient is φ = 254332440.

The previous prime is 381498659. The next prime is 381498703. The reversal of 381498669 is 966894183.

It can be written as a sum of positive squares in only one way, i.e., 362445444 + 19053225 = 19038^2 + 4365^2 .

It is not a de Polignac number, because 381498669 - 2⁷ = 381498541 is a prime.

It is a super-2 number, since 2×381498669² = 291082468897543122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381498659) 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 5 ways as a sum of consecutive naturals, for example, 21194362 + ... + 21194379.

Almost surely, 2^381498669 is an apocalyptic number.

It is an amenable number.

381498669 is a deficient number, since it is larger than the sum of its proper divisors (169554977).

381498669 is a wasteful number, since it uses less digits than its factorization.

381498669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42388747 (or 42388744 counting only the distinct ones).

The product of its digits is 2239488, while the sum is 54.

The square root of 381498669 is about 19531.9909123469. The cubic root of 381498669 is about 725.2665965252.

The spelling of 381498669 in words is "three hundred eighty-one million, four hundred ninety-eight thousand, six hundred sixty-nine".