380187649 has 4 divisors (see below), whose sum is σ = 382705600. Its totient is φ = 377669700.

The previous prime is 380187637. The next prime is 380187659. The reversal of 380187649 is 946781083.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 380187649 - 2²⁷ = 245969921 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 380187599 and 380187608.

It is not an unprimeable number, because it can be changed into a prime (380187659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1258749 + ... + 1259050.

It is an arithmetic number, because the mean of its divisors is an integer number (95676400).

Almost surely, 2^380187649 is an apocalyptic number.

It is an amenable number.

380187649 is a deficient number, since it is larger than the sum of its proper divisors (2517951).

380187649 is a wasteful number, since it uses less digits than its factorization.

380187649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2517950.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 380187649 is about 19498.4011908669. The cubic root of 380187649 is about 724.4348502564.

The spelling of 380187649 in words is "three hundred eighty million, one hundred eighty-seven thousand, six hundred forty-nine".