3780528457 has 2 divisors, whose sum is σ = 3780528458. Its totient is φ = 3780528456.

The previous prime is 3780528413. The next prime is 3780528473. The reversal of 3780528457 is 7548250873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3779298576 + 1229881 = 61476^2 + 1109^2 .

It is a cyclic number.

It is not a de Polignac number, because 3780528457 - 2⁷ = 3780528329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3780528457.

It is not a weakly prime, because it can be changed into another prime (3780528407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1890264228 + 1890264229.

It is an arithmetic number, because the mean of its divisors is an integer number (1890264229).

Almost surely, 2^3780528457 is an apocalyptic number.

It is an amenable number.

3780528457 is a deficient number, since it is larger than the sum of its proper divisors (1).

3780528457 is an equidigital number, since it uses as much as digits as its factorization.

3780528457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1881600, while the sum is 49.

The square root of 3780528457 is about 61486.0021224343. The cubic root of 3780528457 is about 1557.8208200260.

The spelling of 3780528457 in words is "three billion, seven hundred eighty million, five hundred twenty-eight thousand, four hundred fifty-seven".