3729450857 has 4 divisors (see below), whose sum is σ = 4068491856. Its totient is φ = 3390409860.

The previous prime is 3729450839. The next prime is 3729450863. The reversal of 3729450857 is 7580549273.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7580549273 = 11 ⋅689140843.

It is a cyclic number.

It is not a de Polignac number, because 3729450857 - 2²² = 3725256553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3729450817) 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 3 ways as a sum of consecutive naturals, for example, 169520483 + ... + 169520504.

It is an arithmetic number, because the mean of its divisors is an integer number (1017122964).

Almost surely, 2^3729450857 is an apocalyptic number.

It is an amenable number.

3729450857 is a deficient number, since it is larger than the sum of its proper divisors (339040999).

3729450857 is a wasteful number, since it uses less digits than its factorization.

3729450857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339040998.

The product of its (nonzero) digits is 2116800, while the sum is 50.

The square root of 3729450857 is about 61069.2300344453. The cubic root of 3729450857 is about 1550.7732329314.

The spelling of 3729450857 in words is "three billion, seven hundred twenty-nine million, four hundred fifty thousand, eight hundred fifty-seven".