3666889157 has 16 divisors (see below), whose sum is σ = 3887084544. Its totient is φ = 3454272000.

The previous prime is 3666889151. The next prime is 3666889189. The reversal of 3666889157 is 7519886663.

It is a cyclic number.

It is not a de Polignac number, because 3666889157 - 2²² = 3662694853 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3666889096 and 3666889105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666889151) 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, 173432 + ... + 193422.

It is an arithmetic number, because the mean of its divisors is an integer number (242942784).

Almost surely, 2^3666889157 is an apocalyptic number.

It is an amenable number.

3666889157 is a deficient number, since it is larger than the sum of its proper divisors (220195387).

3666889157 is a wasteful number, since it uses less digits than its factorization.

3666889157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20180.

The product of its digits is 13063680, while the sum is 59.

The square root of 3666889157 is about 60554.8442075446. The cubic root of 3666889157 is about 1542.0528586345.

The spelling of 3666889157 in words is "three billion, six hundred sixty-six million, eight hundred eighty-nine thousand, one hundred fifty-seven".