1764380538 has 12 divisors (see below), whose sum is σ = 3822824538. Its totient is φ = 588126840.

The previous prime is 1764380537. The next prime is 1764380539. The reversal of 1764380538 is 8350834671.

1764380538 is a `hidden beast` number, since 1 + 76 + 43 + 8 + 0 + 538 = 666.

It is an interprime number because it is at equal distance from previous prime (1764380537) and next prime (1764380539).

It can be written as a sum of positive squares in only one way, i.e., 1649740689 + 114639849 = 40617^2 + 10707^2 .

It is a super-2 number, since 2×1764380538² = 6226077365746338888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1764380493 and 1764380502.

It is not an unprimeable number, because it can be changed into a prime (1764380537) 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 5 ways as a sum of consecutive naturals, for example, 49010553 + ... + 49010588.

Almost surely, 2^1764380538 is an apocalyptic number.

1764380538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1764380538 is an abundant number, since it is smaller than the sum of its proper divisors (2058444000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1764380538 is a wasteful number, since it uses less digits than its factorization.

1764380538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98021149 (or 98021146 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 1764380538 is about 42004.5299699925. The cubic root of 1764380538 is about 1208.3630022658.

The spelling of 1764380538 in words is "one billion, seven hundred sixty-four million, three hundred eighty thousand, five hundred thirty-eight".