380591649 has 16 divisors (see below), whose sum is σ = 588355200. Its totient is φ = 242695728.

The previous prime is 380591633. The next prime is 380591711. The reversal of 380591649 is 946195083.

It is a happy number.

It is not a de Polignac number, because 380591649 - 2⁴ = 380591633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (380591149) 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, 305814 + ... + 307055.

It is an arithmetic number, because the mean of its divisors is an integer number (36772200).

Almost surely, 2^380591649 is an apocalyptic number.

It is an amenable number.

380591649 is a deficient number, since it is larger than the sum of its proper divisors (207763551).

380591649 is a wasteful number, since it uses less digits than its factorization.

380591649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612901 (or 612895 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 380591649 is about 19508.7582639183. The cubic root of 380591649 is about 724.6913622480.

The spelling of 380591649 in words is "three hundred eighty million, five hundred ninety-one thousand, six hundred forty-nine".