380256649 has 8 divisors (see below), whose sum is σ = 388679040. Its totient is φ = 371848176.

The previous prime is 380256641. The next prime is 380256719. The reversal of 380256649 is 946652083.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 380256649 - 2³ = 380256641 is a prime.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 67462 + ... + 72880.

It is an arithmetic number, because the mean of its divisors is an integer number (48584880).

Almost surely, 2^380256649 is an apocalyptic number.

It is an amenable number.

380256649 is a deficient number, since it is larger than the sum of its proper divisors (8422391).

380256649 is a wasteful number, since it uses less digits than its factorization.

380256649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6959.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 380256649 is about 19500.1704864342. The cubic root of 380256649 is about 724.4786733362.

The spelling of 380256649 in words is "three hundred eighty million, two hundred fifty-six thousand, six hundred forty-nine".