16380457 has 2 divisors, whose sum is σ = 16380458. Its totient is φ = 16380456.

The previous prime is 16380437. The next prime is 16380461. The reversal of 16380457 is 75408361.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11048976 + 5331481 = 3324^2 + 2309^2 .

It is a cyclic number.

It is not a de Polignac number, because 16380457 - 2¹⁵ = 16347689 is a prime.

It is not a weakly prime, because it can be changed into another prime (16380437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8190228 + 8190229.

It is an arithmetic number, because the mean of its divisors is an integer number (8190229).

Almost surely, 2^16380457 is an apocalyptic number.

It is an amenable number.

16380457 is a deficient number, since it is larger than the sum of its proper divisors (1).

16380457 is an equidigital number, since it uses as much as digits as its factorization.

16380457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 16380457 is about 4047.2777270654. The cubic root of 16380457 is about 253.9658591763.

The spelling of 16380457 in words is "sixteen million, three hundred eighty thousand, four hundred fifty-seven".