369691381 has 4 divisors (see below), whose sum is σ = 370667200. Its totient is φ = 368715564.

The previous prime is 369691373. The next prime is 369691393. The reversal of 369691381 is 183196963.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 183196963 = 523 ⋅350281.

It is a cyclic number.

It is not a de Polignac number, because 369691381 - 2³ = 369691373 is a prime.

It is a super-2 number, since 2×369691381² = 273343434371374322, 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 (369691321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 487341 + ... + 488098.

It is an arithmetic number, because the mean of its divisors is an integer number (92666800).

Almost surely, 2^369691381 is an apocalyptic number.

It is an amenable number.

369691381 is a deficient number, since it is larger than the sum of its proper divisors (975819).

369691381 is an equidigital number, since it uses as much as digits as its factorization.

369691381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975818.

The product of its digits is 209952, while the sum is 46.

The square root of 369691381 is about 19227.3602192293. The cubic root of 369691381 is about 717.7057767498.

The spelling of 369691381 in words is "three hundred sixty-nine million, six hundred ninety-one thousand, three hundred eighty-one".