16380451 has 4 divisors (see below), whose sum is σ = 17242600. Its totient is φ = 15518304.

The previous prime is 16380437. The next prime is 16380457. The reversal of 16380451 is 15408361.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16380451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16380457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431046 + ... + 431083.

It is an arithmetic number, because the mean of its divisors is an integer number (4310650).

Almost surely, 2^16380451 is an apocalyptic number.

16380451 is a deficient number, since it is larger than the sum of its proper divisors (862149).

16380451 is an equidigital number, since it uses as much as digits as its factorization.

16380451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 862148.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 16380451 is about 4047.2769858264. The cubic root of 16380451 is about 253.9658281679.

The spelling of 16380451 in words is "sixteen million, three hundred eighty thousand, four hundred fifty-one".