3557642641 has 4 divisors (see below), whose sum is σ = 4065877312. Its totient is φ = 3049407972.

The previous prime is 3557642633. The next prime is 3557642659. The reversal of 3557642641 is 1462467553.

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: 1462467553 = 83 ⋅17620091.

It is a cyclic number.

It is not a de Polignac number, because 3557642641 - 2³ = 3557642633 is a prime.

It is a super-2 number, since 2×3557642641² = 25313642322122909762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3557642681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254117325 + ... + 254117338.

It is an arithmetic number, because the mean of its divisors is an integer number (1016469328).

Almost surely, 2^3557642641 is an apocalyptic number.

It is an amenable number.

3557642641 is a deficient number, since it is larger than the sum of its proper divisors (508234671).

3557642641 is an equidigital number, since it uses as much as digits as its factorization.

3557642641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508234670.

The product of its digits is 604800, while the sum is 43.

The square root of 3557642641 is about 59645.9775760277. The cubic root of 3557642641 is about 1526.5842378779.

The spelling of 3557642641 in words is "three billion, five hundred fifty-seven million, six hundred forty-two thousand, six hundred forty-one".