3756445505 has 4 divisors (see below), whose sum is σ = 4507734612. Its totient is φ = 3005156400.

The previous prime is 3756445499. The next prime is 3756445507. The reversal of 3756445505 is 5055446573.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 556393744 + 3200051761 = 23588^2 + 56569^2 .

It is not a de Polignac number, because 3756445505 - 2⁴ = 3756445489 is a prime.

It is a super-2 number, since 2×3756445505² = 28221765664069410050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3756445507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 375644546 + ... + 375644555.

It is an arithmetic number, because the mean of its divisors is an integer number (1126933653).

Almost surely, 2^3756445505 is an apocalyptic number.

It is an amenable number.

3756445505 is a deficient number, since it is larger than the sum of its proper divisors (751289107).

3756445505 is an equidigital number, since it uses as much as digits as its factorization.

3756445505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751289106.

The product of its (nonzero) digits is 1260000, while the sum is 44.

The square root of 3756445505 is about 61289.8483029612. The cubic root of 3756445505 is about 1554.5058627130.

The spelling of 3756445505 in words is "three billion, seven hundred fifty-six million, four hundred forty-five thousand, five hundred five".