377852401809 has 27 divisors (see below), whose sum is σ = 555046046139. Its totient is φ = 247698303120.

The previous prime is 377852401783. The next prime is 377852401811. The reversal of 377852401809 is 908104258773.

It is a happy number.

The square root of 377852401809 is 614697.

It is a perfect power (a square), and thus also a powerful number.

377852401809 is a `hidden beast` number, since 37 + 7 + 8 + 524 + 0 + 1 + 80 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 12287057409 + 365565344400 = 110847^2 + 604620^2 .

It is not a de Polignac number, because 377852401809 - 2¹³ = 377852393617 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (377852401819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 112487872 + ... + 112491230.

Almost surely, 2^377852401809 is an apocalyptic number.

377852401809 is the 614697-th square number.

377852401809 is the 307349-th centered octagonal number.

It is an amenable number.

377852401809 is a deficient number, since it is larger than the sum of its proper divisors (177193644330).

377852401809 is an frugal number, since it uses more digits than its factorization.

377852401809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6846 (or 3423 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 377852401809 in words is "three hundred seventy-seven billion, eight hundred fifty-two million, four hundred one thousand, eight hundred nine".