380418391 has 4 divisors (see below), whose sum is σ = 392689984. Its totient is φ = 368146800.

The previous prime is 380418373. The next prime is 380418407. The reversal of 380418391 is 193814083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 193814083 = 6977 ⋅27779.

It is a cyclic number.

It is not a de Polignac number, because 380418391 - 2⁷ = 380418263 is a prime.

It is a super-2 number, since 2×380418391² = 289436304422057762, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 380418391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380418301) 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 3 ways as a sum of consecutive naturals, for example, 6135750 + ... + 6135811.

It is an arithmetic number, because the mean of its divisors is an integer number (98172496).

Almost surely, 2^380418391 is an apocalyptic number.

380418391 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

380418391 is a deficient number, since it is larger than the sum of its proper divisors (12271593).

380418391 is a wasteful number, since it uses less digits than its factorization.

380418391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12271592.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 380418391 is about 19504.3172400369. The cubic root of 380418391 is about 724.5813776718.

The spelling of 380418391 in words is "three hundred eighty million, four hundred eighteen thousand, three hundred ninety-one".