3493687637 has 4 divisors (see below), whose sum is σ = 3811295616. Its totient is φ = 3176079660.

The previous prime is 3493687633. The next prime is 3493687657. The reversal of 3493687637 is 7367863943.

3493687637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 7367863943 = 11 ⋅669805813.

It is a cyclic number.

It is not a de Polignac number, because 3493687637 - 2² = 3493687633 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3493687633) 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, 158803973 + ... + 158803994.

It is an arithmetic number, because the mean of its divisors is an integer number (952823904).

Almost surely, 2^3493687637 is an apocalyptic number.

It is an amenable number.

3493687637 is a deficient number, since it is larger than the sum of its proper divisors (317607979).

3493687637 is a wasteful number, since it uses less digits than its factorization.

3493687637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317607978.

The product of its digits is 13716864, while the sum is 56.

The square root of 3493687637 is about 59107.4245505588. The cubic root of 3493687637 is about 1517.3811722791.

The spelling of 3493687637 in words is "three billion, four hundred ninety-three million, six hundred eighty-seven thousand, six hundred thirty-seven".