3698390987 has 16 divisors (see below), whose sum is σ = 3987118080. Its totient is φ = 3417716352.

The previous prime is 3698390977. The next prime is 3698391013. The reversal of 3698390987 is 7890938963.

It is a cyclic number.

It is not a de Polignac number, because 3698390987 - 2²² = 3694196683 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3698390947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1104638 + ... + 1107980.

It is an arithmetic number, because the mean of its divisors is an integer number (249194880).

Almost surely, 2^3698390987 is an apocalyptic number.

3698390987 is a deficient number, since it is larger than the sum of its proper divisors (288727093).

3698390987 is a wasteful number, since it uses less digits than its factorization.

3698390987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522.

The product of its (nonzero) digits is 17635968, while the sum is 62.

The square root of 3698390987 is about 60814.3978593885. The cubic root of 3698390987 is about 1546.4561404696.

The spelling of 3698390987 in words is "three billion, six hundred ninety-eight million, three hundred ninety thousand, nine hundred eighty-seven".