380821390 has 16 divisors (see below), whose sum is σ = 704005632. Its totient is φ = 148211424.

The previous prime is 380821387. The next prime is 380821393. The reversal of 380821390 is 93128083.

It is an interprime number because it is at equal distance from previous prime (380821387) and next prime (380821393).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380821393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514254 + ... + 514993.

It is an arithmetic number, because the mean of its divisors is an integer number (44000352).

Almost surely, 2^380821390 is an apocalyptic number.

380821390 is a deficient number, since it is larger than the sum of its proper divisors (323184242).

380821390 is a wasteful number, since it uses less digits than its factorization.

380821390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029291.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 380821390 is about 19514.6455258608. The cubic root of 380821390 is about 724.8371508989.

The spelling of 380821390 in words is "three hundred eighty million, eight hundred twenty-one thousand, three hundred ninety".