380989751 has 4 divisors (see below), whose sum is σ = 381258912. Its totient is φ = 380720592.

The previous prime is 380989747. The next prime is 380989781. The reversal of 380989751 is 157989083.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 380989751 - 2² = 380989747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 380989751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380989781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132446 + ... + 135291.

It is an arithmetic number, because the mean of its divisors is an integer number (95314728).

Almost surely, 2^380989751 is an apocalyptic number.

380989751 is a deficient number, since it is larger than the sum of its proper divisors (269161).

380989751 is a wasteful number, since it uses less digits than its factorization.

380989751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269160.

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 380989751 is about 19518.9587580895. The cubic root of 380989751 is about 724.9439519097.

The spelling of 380989751 in words is "three hundred eighty million, nine hundred eighty-nine thousand, seven hundred fifty-one".