380451863 has 4 divisors (see below), whose sum is σ = 415038408. Its totient is φ = 345865320.

The previous prime is 380451859. The next prime is 380451881. The reversal of 380451863 is 368154083.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 368154083 = 11 ⋅33468553.

It is a cyclic number.

It is not a de Polignac number, because 380451863 - 2² = 380451859 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380451803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17293256 + ... + 17293277.

It is an arithmetic number, because the mean of its divisors is an integer number (103759602).

Almost surely, 2^380451863 is an apocalyptic number.

380451863 is a deficient number, since it is larger than the sum of its proper divisors (34586545).

380451863 is a wasteful number, since it uses less digits than its factorization.

380451863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34586544.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 380451863 is about 19505.1752876000. The cubic root of 380451863 is about 724.6026283764.

The spelling of 380451863 in words is "three hundred eighty million, four hundred fifty-one thousand, eight hundred sixty-three".