3493643672 has 8 divisors (see below), whose sum is σ = 6550581900. Its totient is φ = 1746821832.

The previous prime is 3493643669. The next prime is 3493643689. The reversal of 3493643672 is 2763463943.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×3493643672² = 24411092213811287168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 218352722 + ... + 218352737.

Almost surely, 2^3493643672 is an apocalyptic number.

It is an amenable number.

3493643672 is a deficient number, since it is larger than the sum of its proper divisors (3056938228).

3493643672 is a wasteful number, since it uses less digits than its factorization.

3493643672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436705465 (or 436705461 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 47.

The square root of 3493643672 is about 59107.0526417956. The cubic root of 3493643672 is about 1517.3748072813.

The spelling of 3493643672 in words is "three billion, four hundred ninety-three million, six hundred forty-three thousand, six hundred seventy-two".