3689994957 has 32 divisors (see below), whose sum is σ = 5615253504. Its totient is φ = 2135356800.

The previous prime is 3689994947. The next prime is 3689995009. The reversal of 3689994957 is 7594999863.

It is not a de Polignac number, because 3689994957 - 2¹⁵ = 3689962189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3689994891 and 3689994900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3689994907) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34578 + ... + 92604.

It is an arithmetic number, because the mean of its divisors is an integer number (175476672).

Almost surely, 2^3689994957 is an apocalyptic number.

It is an amenable number.

3689994957 is a deficient number, since it is larger than the sum of its proper divisors (1925258547).

3689994957 is a wasteful number, since it uses less digits than its factorization.

3689994957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58129.

The product of its digits is 132269760, while the sum is 69.

The square root of 3689994957 is about 60745.3286845993. The cubic root of 3689994957 is about 1545.2850068573.

The spelling of 3689994957 in words is "three billion, six hundred eighty-nine million, nine hundred ninety-four thousand, nine hundred fifty-seven".