3756481857 has 12 divisors (see below), whose sum is σ = 5745207780. Its totient is φ = 2357008128.

The previous prime is 3756481847. The next prime is 3756481867. The reversal of 3756481857 is 7581846573.

It is a happy number.

3756481857 is a `hidden beast` number, since 37 + 56 + 481 + 85 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (3756481847) and next prime (3756481867).

It can be written as a sum of positive squares in 2 ways, for example, as 3531211776 + 225270081 = 59424^2 + 15009^2 .

It is not a de Polignac number, because 3756481857 - 2⁶ = 3756481793 is a prime.

It is a super-2 number, since 2×3756481857² = 28222311883940336898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3756481847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12275932 + ... + 12276237.

It is an arithmetic number, because the mean of its divisors is an integer number (478767315).

Almost surely, 2^3756481857 is an apocalyptic number.

It is an amenable number.

3756481857 is a deficient number, since it is larger than the sum of its proper divisors (1988725923).

3756481857 is a wasteful number, since it uses less digits than its factorization.

3756481857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24552192 (or 24552189 counting only the distinct ones).

The product of its digits is 5644800, while the sum is 54.

The square root of 3756481857 is about 61290.1448603281. The cubic root of 3756481857 is about 1554.5108771355.

The spelling of 3756481857 in words is "three billion, seven hundred fifty-six million, four hundred eighty-one thousand, eight hundred fifty-seven".