380256645 has 16 divisors (see below), whose sum is σ = 608817600. Its totient is φ = 202667904.

The previous prime is 380256641. The next prime is 380256719. The reversal of 380256645 is 546652083.

It is not a de Polignac number, because 380256645 - 2² = 380256641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380256641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17206 + ... + 32504.

It is an arithmetic number, because the mean of its divisors is an integer number (38051100).

Almost surely, 2^380256645 is an apocalyptic number.

It is an amenable number.

380256645 is a deficient number, since it is larger than the sum of its proper divisors (228560955).

380256645 is a wasteful number, since it uses less digits than its factorization.

380256645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16964.

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 380256645 is about 19500.1703838710. The cubic root of 380256645 is about 724.4786707958.

The spelling of 380256645 in words is "three hundred eighty million, two hundred fifty-six thousand, six hundred forty-five".